foundrows mysql_mysql found_rows() ﹏ヽ暗。殇╰゛Y 2023-01-11 13:16 125阅读 0赞 FOUND\_ROWS()的用法: 例子: CREATE PRODURE TEST(IN NAME VARCHAR(20),OUT NUMBER) AS BEGIN IF NAME IS NULL OR NAME=='' THEN SELECT \* FROM EMPLOYEES; ELSE SELECT \* FROM EMPLOYEES WHERE FIRST\_NAME LIKE NAME; END IF; SELECT FOUND\_ROWS() INTO NUMBER; END; 在命令行中:CALL TEST('test',@num); SELECT @num; 就可以查到你上一个查询中的行数; 简单的例子: mysql> select \* from employees limit 10; \+--------+------------+------------+-----------+--------+------------+ | emp\_no | birth\_date | first\_name | last\_name | gender | hire\_date | \+--------+------------+------------+-----------+--------+------------+ | 10001 | 1953-09-02 | Georgi | Facello | M | 1986-06-26 | | 10002 | 1964-06-02 | Bezalel | Simmel | F | 1985-11-21 | | 10003 | 1959-12-03 | Parto | Bamford | M | 1986-08-28 | | 10004 | 1954-05-01 | Chirstian | Koblick | M | 1986-12-01 | | 10005 | 1955-01-21 | Kyoichi | Maliniak | M | 1989-09-12 | | 10006 | 1953-04-20 | Anneke | Preusig | F | 1989-06-02 | | 10007 | 1957-05-23 | Tzvetan | Zielinski | F | 1989-02-10 | | 10008 | 1958-02-19 | Saniya | Kalloufi | M | 1994-09-15 | | 10009 | 1952-04-19 | Sumant | Peac | F | 1985-02-18 | | 10010 | 1963-06-01 | Duangkaew | Piveteau | F | 1989-08-24 | \+--------+------------+------------+-----------+--------+------------+ 10 rows in set (0.00 sec) mysql> select found\_rows(); \+--------------+ | found\_rows() | \+--------------+ | 10 | \+--------------+ 1 row in set (0.00 sec)
相关 MYSQLMYSQL存储过程与游标学习(二) -- 处理试剂关联方法 -- DROP PROCEDURE UpdateKitRelateMethod; DELIMITER // 小鱼儿/ 2023年06月21日 07:16/ 0 赞/ 34 阅读
相关 foundrows mysql_mysql found_rows() FOUND\_ROWS()的用法: 例子: CREATE PRODURE TEST(IN NAME VARCHAR(20),OUT NUMBER) AS BEGIN I ﹏ヽ暗。殇╰゛Y/ 2023年01月11日 13:16/ 0 赞/ 126 阅读
相关 Kubernetes搭建mysqlMYSQL_ROOT_PASSWORD与MYSQL_ALLOW_EMPTY_PASSWORD不生效问题,登录报Access denied for user ‘user Kubernetes搭建mysqlMYSQL\_ROOT\_PASSWORD与MYSQL\_ALLOW\_EMPTY\_PASSWORD不生效问题,登录报Access den 痛定思痛。/ 2022年12月15日 03:37/ 0 赞/ 271 阅读
还没有评论,来说两句吧...