数据库关键字整理之——金仓数据库

拼搏现实的明天。 2024-03-23 14:40 80阅读 0赞

关键字是指在数据库中有意义的字，通常是数据库内部使用， 不能用于命名用户的数据对象。 有的数据库还会详细划分，例如分为关键字，候选字，甚至更详细的分类。分类的标准例如有的是绝对不可以使用，有的通过一定手段例如添加双引号可以使用。

我们为了方便统一称之为关键字，通常用户编写的对象中使用关键字会造成错误或不确定的影响，为了避免这个问题，用户应该避免使用数据库的关键字(含保留字或其他保留别名等)。

这个系列主要整理了各大数据库的关键字，可以用于建库，建表，写存储过程，函数等场景避免冲突。最后会有个脚本工具用来检查是否使用关键字。

9de7bb31d0644e7393039222babfed10

欢迎收藏。

### 金仓 ###

SQL 区分保留关键词和非保留关键词。根据标准，保留关键词才是真正的关键词，它们不被允许作为标识 符。非关键词仅仅是在特定上下文中具有特殊的含义并且可以在其他上下文中被用作标识符。大部分非保留 关键词实际上是 SQL 指定的内建表和内建函数的名字。非保留关键词的概念存在的意义上实际上是声明某 些上下文中的一个词被附加了某种预定义的含义

<table> 
 <thead> 
  <tr> 
   <th>Key Word</th> 
   <th>KingbaseES</th> 
   <th>SQL:2016</th> 
   <th>SQL:2011</th> 
   <th>SQL-92</th> 
  </tr> 
 </thead> 
 <tbody> 
  <tr> 
   <td>A</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>ABORT</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>ABS</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>ABSENT</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>ABSOLUTE</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>ACCESS</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>ACCORDING</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>ACTION</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>ADA</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>ADD</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>ADMIN</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>AFTER</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>AGGREGATE</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>ALL</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>ALLOCATE</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>ALSO</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>ALTER</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>ALWAYS</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>ANALYSE</td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>ANALYZE</td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>AND</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>ANY</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>ARE</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>ARRAY</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>ARRAY_AGG</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>ARRAY_MAX_CARDINALITY</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>AS</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>ASC</td> 
   <td>保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>ASENSITIVE</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>ASIN</td> 
   <td></td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>ASSERTION</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>ASSIGNMENT</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>ASYMMETRIC</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>AT</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>ATAN</td> 
   <td></td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>ATOMIC</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>ATACH</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>ATTRIBUTE</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>ATTRIBUTES</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>AUTHORIZATION</td> 
   <td>保留（可以作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>AVG</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>BACKWARD</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>BASE64</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>BEFORE</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>BEGIN</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>BEGIN_FRAME</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>BEGIN_PARTITION</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>BERNOULLI</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>BETWEEN</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>BIGINT</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>BINARY</td> 
   <td>保留（可以作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>BIT</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td></td> 
   <td></td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>BIT_LENGTH</td> 
   <td></td> 
   <td></td> 
   <td></td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>BODY</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>BLOB</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>BLOCKED</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>BOM</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>BOOLEAN</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>BOTH</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>BREADTH</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>BY</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>C</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>CACHE</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>CALL</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>CALLED</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>CARDINALITY</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>CASCADE</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>CASCADED</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>CASE</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>CAST</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>CATALOG</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>CATALOG_NAME</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>CEIL</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>CEILING</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>CHAIN</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>CHAINING</td> 
   <td></td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>CHAR</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>CHARACTER</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>CHARACTERISTICS</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>CHARACTERS</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>CHARACTER_LENGTH</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>CHARACTER_SET_CATALOG</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>CHARACTER_SET_NAME</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>CHARACTER_SET_SCHEMA</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>CHAR_LENGTH</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>CHECK</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>CHECKPOINT</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>CLASS</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>CLASSIFIES</td> 
   <td></td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>CLASS_ORIGIN</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>CLOB</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>CLOSE</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>CLUSTER</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>COALESCE</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>COBOL</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>COLLATE</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>COLLATION</td> 
   <td>保留（可以作为函数或类型）</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>COLLATION_CATALOG</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>COLLATION_NAME</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>COLLATION_SCHEMA</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>COLLECT</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>COLUMN</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>COLUMNS</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>COLUMN_NAME</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>COMMAND_FUNCTION</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>COMMAND_FUNCTION_CODE</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>COMMENT</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>COMMENTS</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>COMMIT</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>COMMITTED</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>CONCURRENTLY</td> 
   <td>保留（可以作为函数或类型）</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>CONDITION</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>CONDITIONAL</td> 
   <td></td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>CONDITION_NUMBER</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>CONFIGURATION</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>CONFLICT</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>CONNECT</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>CONNECTION</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>CONNECTION_NAME</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>CONSTRAINT</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>CONSTRAINTS</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>CONSTRAINT_CATALOG</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>CONSTRAINT_NAME</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>CONSTRAINT_SCHEMA</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>CONSTRUCTOR</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>CONTAINS</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>CONTENT</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>CONTINUE</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>CONTROL</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>CONVERSION</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>CONVERT</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>COPY</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>CORR</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>CORRESPONDING</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>COS</td> 
   <td></td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>COSH</td> 
   <td></td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>COST</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>COUNT</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>COVAR_POP</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>COVAR_SAMP</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>CREATE</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>CROSS</td> 
   <td>保留（可以作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>CSV</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>CUBE</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>CUME_DIST</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>CURRENT</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>CURRENT_CATALOG</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>CURRENT_DATE</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>CURRENT_DEFAULT_TRANSFORM_GROUP</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>CURRENT_PATH</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>CURRENT_ROLE</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>CURRENT_ROW</td> 
   <td></td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>CURRENT_SCHEMA</td> 
   <td>保留（可以作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>CURRENT_TIME</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>CURRENT_TIMESTAMP</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>CURRENT_TRANSFORM_GROUP_FOR_TYPE</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>CURRENT_USER</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>CURSOR</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>CURSOR_NAME</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>CYCLE</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>DATA</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>DATABASE</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>DATALINK</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>DATE</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>DATETIME_INTERVAL_CODE</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>DATETIME_INTERVAL_PRECISION</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>DAY</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>DB</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>DEALLOCATE</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>DEC</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>DECFLOAT</td> 
   <td></td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>DECIMAL</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>DECLARE</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>DEFAULT</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>DEFAULTS</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>DEFERRABLE</td> 
   <td>保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>DEFERRED</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>DEFINE</td> 
   <td></td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>DEFINED</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>DEFINER</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>DEGREE</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>DELETE</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>DELIMITER</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>DELIMITERS</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>DENSE_RANK</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>DEPENDS</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>DEPTH</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>DEREF</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>DERIVED</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>DESC</td> 
   <td>保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>DESCRIBE</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>DESCRIPTOR</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>DETACH</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>DETERMINISTIC</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>DIAGNOSTICS</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>DICTIONARY</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>DISABLE</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>DISCARD</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>DISCONNECT</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>DISPATCH</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>DISTINCT</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>DLNEWCOPY</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>DLPREVIOUSCOPY</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>DLURLCOMPLETE</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>DLURLCOMPLETEONLY</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>DLURLCOMPLETEWRITE</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>DLURLPATH</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>DLURLPATHONLY</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>DLURLPATHWRITE</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>DLURLSCHEME</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>DLURLSERVER</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>DLVALUE</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>DO</td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>DOCUMENT</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>DOMAIN</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>DOUBLE</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>DROP</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>DYNAMIC</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>DYNAMIC_FUNCTION</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>DYNAMIC_FUNCTION_CODE</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>EACH</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>ELEMENT</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>ELSE</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>EMPTY</td> 
   <td></td> 
   <td>保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>ENABLE</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>ENCODING</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>ENCRYPTED</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>END</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>END-EXEC</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>END_FRAME</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>END_PARTITION</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>ENFORCED</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>ENUM</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>EQUALS</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>ESCAPE</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>EVENT</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>EVERY</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>EXCEPT</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>EXCEPTION</td> 
   <td></td> 
   <td></td> 
   <td></td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>EXCLUDE</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>EXCLUDING</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>EXCLUSIVE</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>EXEC</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>EXECUTE</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>EXISTS</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>EXP</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>EXPLAIN</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>EXPRESSION</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>EXTENSION</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>EXTERNAL</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>EXTRACT</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>FALSE</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>FAMILY</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>FETCH</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>FILE</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>FILTER</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>FINAL</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>FINISH</td> 
   <td></td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>FIRST</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>FIRST_VALUE</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>FLAG</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>FLOAT</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>FLOOR</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>FOLLOWING</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>FOR</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>FORCE</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>FOREIGN</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>FORMAT</td> 
   <td></td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>FORTRAN</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>FORWARD</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>FOUND</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>FRAME_ROW</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>FREE</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>FREEZE</td> 
   <td>保留（可以作为函数或类型）</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>FROM</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>FS</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>FULFILL</td> 
   <td></td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>FULL</td> 
   <td>保留（可以作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>FUNCTION</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>FUNCTIONS</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>FUSION</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>G</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>GENERAL</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>GENERATED</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>GET</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>GLOBAL</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>GO</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>GOTO</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>GRANT</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>GRANTED</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>GREATEST</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>GROUP</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>GROUPING</td> 
   <td>非保留 (不能作为函数或类型)</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>GROUPS</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>HANDLER</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>HAVING</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>HEADER</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>HEX</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>HIERARCHY</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>HOLD</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>HOUR</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>ID</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>IDENTITY</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>IF</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>IGNORE</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>ILIKE</td> 
   <td>保留（可以作为函数或类型）</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>IMMEDIATE</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>IMMEDIATELY</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>IMMUTABLE</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>IMPLEMENTATION</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>IMPLICIT</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>IMPORT</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>IN</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>INCLUDING</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>INCREMENT</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>INDENT</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>INDEX</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>INDEXES</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>INDICATOR</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>INHERIT</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>INHERITS</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>INITIAL</td> 
   <td></td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>INITIALLY</td> 
   <td>保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>INLINE</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>INNER</td> 
   <td>保留（可以作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>INOUT</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>INPUT</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>INSENSITIVE</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>INSERT</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>INSTANCE</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>INSTANTIABLE</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>INSTEAD</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>INT</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>INTEGER</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>INTEGRITY</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>INTERSECT</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>INTERSECTION</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>INTERVAL</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>INTO</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>INVOKER</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>IS</td> 
   <td>保留（可以作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>ISNULL</td> 
   <td>保留（可以作为函数或类型）</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>ISOLATION</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>JOIN</td> 
   <td>保留（可以作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>JSON</td> 
   <td></td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>JSON_ARRAY</td> 
   <td></td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>JSON_ARRAYAGG</td> 
   <td></td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>JSON_EXISTS</td> 
   <td></td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>JSON_OBJECT</td> 
   <td></td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>JSON_OBJECTAGG</td> 
   <td></td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>JSON_QUERY</td> 
   <td></td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>JSON_TABLE</td> 
   <td></td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>JSON_TABLE_PRIMITIVE</td> 
   <td></td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>JSON_VALUE</td> 
   <td></td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>K</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>KEEP</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>KEY</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>KEYS</td> 
   <td></td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>KEY_MEMBER</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>KEY_TYPE</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>LABEL</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>LAG</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>LANGUAGE</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>LARGE</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>LAST</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>LAST_VALUE</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>LATERAL</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>LEAD</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>LEADING</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>LEAKPROOF</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>LEAST</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>LEFT</td> 
   <td>保留（可以作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>LENGTH</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>LEVEL</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>LIBRARY</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>LIKE</td> 
   <td>保留（可以作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>LIKE_REGEX</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>LIMIT</td> 
   <td>保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>LINK</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>LISTAGG</td> 
   <td></td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>LISTEN</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>LN</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>LOAD</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>LOCAL</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>LOCALTIME</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>LOCALTIMESTAMP</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>LOCATION</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>LOCATOR</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>LOCK</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>LOCKED</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>LOG</td> 
   <td></td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>LOG10</td> 
   <td></td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>LOGGED</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>LOWER</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>M</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>MAP</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>MAPPING</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>MATCH</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>MATCHED</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>MATCHES</td> 
   <td></td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>MATCH_NUMBER</td> 
   <td></td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>MATCH_RECOGNIZE</td> 
   <td></td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>MATERIALIZED</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>MAX</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>MAXVALUE</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>MEASURES</td> 
   <td></td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>MEMBER</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>MERGE</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>MESSAGE_LENGTH</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>MESSAGE_OCTET_LENGTH</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>MESSAGE_TEXT</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>METHOD</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>MIN</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>MINUTE</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>MINVALUE</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>MOD</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>MODE</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>MODIFIES</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>MODULE</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>MONTH</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>MORE</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>MOVE</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>MULTISET</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>MUMPS</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>NAME</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>NAMES</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>NAMESPACE</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>NATIONAL</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>NATURAL</td> 
   <td>保留（可以作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>NCHAR</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>NCLOB</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>NESTING</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>NEW</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>NEXT</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>NFC</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>NFD</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>NFKC</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>NFKD</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>NIL</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>NO</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>NOCACHE</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>NOCYCLE</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>NONE</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>NOORDER</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>NORMALIZE</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>NORMALIZED</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>NOT</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>NOTHING</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>NOTIFY</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>NOTNULL</td> 
   <td>保留（能作为函数或类型）</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>NOWAIT</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>NTH_VALUE</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>NTILE</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>NULL</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>NULLABLE</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>NULLIF</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>NULLS</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>NUMBER</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>NUMERIC</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>OBJECT</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>OCCURRENCES_REGEX</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>OCTETS</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>OCTET_LENGTH</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>OF</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>OFF</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>OFFSET</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>OIDS</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>OLD</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>OMIT</td> 
   <td></td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>ON</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>ONE</td> 
   <td></td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>ONLY</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>OPEN</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>OPERATOR</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>OPTION</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>OPTIONS</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>OR</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>ORDER</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>ORDERING</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>ORDINALITY</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>OTHERS</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>OUT</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>OUTER</td> 
   <td>保留（可以作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>OUTPUT</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>OVER</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>OVERFLOW</td> 
   <td></td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>OVERLAPS</td> 
   <td>保留（可以作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>OVERLAY</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>OVERRIDING</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>OWNED</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>OWNER</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>P</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>PAD</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>PARALLEL</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>PARAMETER</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>PARAMETER_MODE</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>PARAMETER_NAME</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>PARAMETER_ORDINAL_POSITION</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>PARAMETER_SPECIFIC_CATALOG</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>PARAMETER_SPECIFIC_NAME</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>PARAMETER_SPECIFIC_SCHEMA</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>PARSER</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>PARTIAL</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>PARTITION</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>PASCAL</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>PASS</td> 
   <td></td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>PASSING</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>PASSTHROUGH</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>PASSWORD</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>PAST</td> 
   <td></td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>PATH</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>PATTERN</td> 
   <td></td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>PER</td> 
   <td></td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>PERCENT</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>PERCENTILE_CONT</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>PERCENTILE_DISC</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>PERCENT_RANK</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>PERIOD</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>PERMISSION</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>PERMUTE</td> 
   <td></td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>PLACING</td> 
   <td>保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>PLAN</td> 
   <td></td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>PLANS</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>PLI</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>POLICY</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>PORTION</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>POSITION</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>POSITION_REGEX</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>POWER</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>PRECEDES</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>PRECEDING</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>PRECISION</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>PREPARE</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>PREPARED</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>PRESERVE</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>PRIMARY</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>PRIOR</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>PRIVATE</td> 
   <td></td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>PRIVILEGES</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>PROCEDURAL</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>PROCEDURE</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>PROCEDURES</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>PROGRAM</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>PRUNE</td> 
   <td></td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>PTF</td> 
   <td></td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>PUBLIC</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>PUBLICATION</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>QUOTE</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>QUOTES</td> 
   <td></td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>RANGE</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>RANK</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>READ</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>READS</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>REAL</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>REASSIGN</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>RECHECK</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>RECOVERY</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>RECURSIVE</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>REF</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>REFERENCES</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>REFERENCING</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>REFRESH</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>REGR_AVGX</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>REGR_AVGY</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>REGR_COUNT</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>REGR_INTERCEPT</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>REGR_R2</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>REGR_SLOPE</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>REGR_SXX</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>REGR_SXY</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>REGR_SYY</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>REINDEX</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>RELATIVE</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>RELEASE</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>RENAME</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>REPEATABLE</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>REPLACE</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>REPLICA</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>REQUIRING</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>RESET</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>RESPECT</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>RESTART</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>RESTORE</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>RESTRICT</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>RESULT</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>RETURN</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>RETURNED_CARDINALITY</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>RETURNED_LENGTH</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>RETURNED_OCTET_LENGTH</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>RETURNED_SQLSTATE</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>RETURNING</td> 
   <td>保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>RETURNS</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>REVOKE</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>RIGHT</td> 
   <td>保留（可以作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>ROLE</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>ROLLBACK</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>ROLLUP</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>ROUTINE</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>ROUTINES</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>ROUTINE_CATALOG</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>ROUTINE_NAME</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>ROUTINE_SCHEMA</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>ROW</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>ROWS</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>ROW_COUNT</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>ROW_NUMBER</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>RULE</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>RUNNING</td> 
   <td></td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SAVEPOINT</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SCALAR</td> 
   <td></td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SCALE</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>SCHEMA</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>SCHEMAS</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SCHEMA_NAME</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>SCOPE</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SCOPE_CATALOG</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SCOPE_NAME</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SCOPE_SCHEMA</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SCROLL</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>SEARCH</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SECOND</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>SECTION</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>SECURITY</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SELECT</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>SELECTIVE</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SELF</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SENSITIVE</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SEQUENCE</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SEQUENCES</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SERIALIZABLE</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>SERVER</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SERVER_NAME</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>SESSION</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>SESSION_USER</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>SET</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>SETOF</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SETS</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SHARE</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SHOW</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SIMILAR</td> 
   <td>保留（可以作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SIMPLE</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SIN</td> 
   <td></td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SINH</td> 
   <td></td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SIZE</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>SKIP</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SMALLINT</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>SNAPSHOT</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SOME</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>SOURCE</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SPACE</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>SPECIFIC</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SPECIFICTYPE</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SPECIFIC_NAME</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SQL</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>SQLCODE</td> 
   <td></td> 
   <td></td> 
   <td></td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>SQLERROR</td> 
   <td></td> 
   <td></td> 
   <td></td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>SQLEXCEPTION</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SQLSTATE</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>SQLWARNING</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SQRT</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>STABLE</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>STANDALONE</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>START</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>STATE</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>STATEMENT</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>STATIC</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>STATISTICS</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>STDDEV_POP</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>STDDEV_SAMP</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>STDIN</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>STDOUT</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>STORAGE</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>STORED</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>STRICT</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>STRING</td> 
   <td></td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>STRIP</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>STRUCTURE</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>STYLE</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SUBCLASS_ORIGIN</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>SUBMULTISET</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SUBSCRIPTION</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SUBSET</td> 
   <td></td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SUBSTRING</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>SUBSTRING_REGEX</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SUCCEEDS</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SUM</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>SUPPORT</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SYMMETRIC</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SYSID</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SYSTEM</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SYSTEM_TIME</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>SYSTEM_USER</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>T</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>TABLE</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>TABLES</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>TABLESAMPLE</td> 
   <td>保留 (可以作为函数或类型)</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>TABLESPACE</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>TABLE_NAME</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>TAN</td> 
   <td></td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>TANH</td> 
   <td></td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>TEMP</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>TEMPLATE</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>TEMPORARY</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>TEXT</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>THEN</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>THROUGH</td> 
   <td></td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>TIES</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>TIME</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>TIMESTAMP</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>TIMEZONE_HOUR</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>TIMEZONE_MINUTE</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>TINYINT</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>TO</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>TOKEN</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>TOP_LEVEL_COUNT</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>TRAILING</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>TRANSACTION</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>TRANSACTIONS_COMMITTED</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>TRANSACTIONS_ROLLED_BACK</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>TRANSACTION_ACTIVE</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>TRANSFORM</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>TRANSFORMS</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>TRANSLATE</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>TRANSLATE_REGEX</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>TRANSLATION</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>TREAT</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>TRIGGER</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>TRIGGER_CATALOG</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>TRIGGER_NAME</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>TRIGGER_SCHEMA</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>TRIM</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>TRIM_ARRAY</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>TRUE</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>TRUNCATE</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>TRUSTED</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>TYPE</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>TYPES</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>UESCAPE</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>UNBOUNDED</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>UNCOMMITTED</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>UNCONDITIONAL</td> 
   <td></td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>UNDER</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>UNENCRYPTED</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>UNION</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>UNIQUE</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>UNKNOWN</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>UNLINK</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>UNLISTEN</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>UNLOGGED</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>UNMATCHED</td> 
   <td></td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>UNNAMED</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
  </tr> 
  <tr> 
   <td>UNNEST</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>UNTIL</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>UNTYPED</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>UPDATE</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>UPPER</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>URI</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>USAGE</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>USER</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>USER_DEFINED_TYPE_CATALOG</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>USER_DEFINED_TYPE_CODE</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>USER_DEFINED_TYPE_NAME</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>USER_DEFINED_TYPE_SCHEMA</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>USING</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>UTF16</td> 
   <td></td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>UTF32</td> 
   <td></td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>UTF8</td> 
   <td></td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>VACUUM</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>VALID</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>VALIDATE</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>VALIDATOR</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>VALUE</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>VALUES</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>VALUE_OF</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>VARBINARY</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>VARCHAR</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>VARIADIC</td> 
   <td>保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>VARYING</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>VAR_POP</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>VAR_SAMP</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>VERBOSE</td> 
   <td>保留（可以作为函数或类型）</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>VERSION</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>VERSIONING</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>VIEW</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>VIEWS</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>VOLATILE</td> 
   <td>非保留</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>WHEN</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>WHENEVER</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>WHERE</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>WHITESPACE</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>WIDTH_BUCKET</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>WINDOW</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>WITH</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>WITHIN</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>WITHOUT</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>WORK</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>WRAPPER</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>WRITE</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>XML</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>XMLAGG</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>XMLATTRIBUTES</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>XMLBINARY</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>XMLCAST</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>XMLCOMMENT</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>XMLCONCAT</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>XMLDECLARATION</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>XMLDOCUMENT</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>XMLELEMENT</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>XMLEXISTS</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>XMLFOREST</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>XMLITERATE</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>XMLNAMESPACES</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>XMLPARSE</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>XMLPI</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>XMLQUERY</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>XMLROOT</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td></td> 
   <td></td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>XMLSCHEMA</td> 
   <td></td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>XMLSERIALIZE</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>XMLTABLE</td> 
   <td>非保留（不能作为函数或类型）</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>XMLTEXT</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>XMLVALIDATE</td> 
   <td></td> 
   <td>保留</td> 
   <td>保留</td> 
   <td></td> 
  </tr> 
  <tr> 
   <td>YEAR</td> 
   <td>非保留</td> 
   <td>保留</td> 
   <td>保留</td> 
   <td>保留</td> 
  </tr> 
  <tr> 
   <td>YES</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td>非保留</td> 
   <td></td> 
  </tr> 
 </tbody> 
</table>