【原创】数据库基础之Sqlite

迈不过友情╰ 2021-11-10 15:00 322阅读 0赞

![1509647-20190620144118709-1664882316.png][]

官方：https://www.sqlite.org/index.html

# 简介 #

SQLite is a C-language library that implements a small, fast, self-contained, high-reliability, full-featured, SQL database engine. SQLite is the most used database engine in the world. SQLite is built into all mobile phones and most computers and comes bundled inside countless other applications that people use every day.

The SQLite file format is stable, cross-platform, and backwards compatible and the developers pledge to keep it that way through at least the year 2050. SQLite database files are commonly used as containers to transfer rich content between systems and as a long-term archival format for data. There are over 1 trillion (1e12) SQLite databases in active use.

# 安装 #

> \# yum install sqlite-devel

# 使用 #

# sqlite3 -version
    
    # sqlite3 /path/to/db
    
    sqlite>.database
    
    sqlite>.schema
    
    sqlite>.schema table_name
    
    sqlite>insert/delete/select/update
    
    sqlite>.exit
    
    sqlite>.quit

sqlite> .help  
.backup ?DB? FILE Backup DB (default "main") to FILE  
.bail ON|OFF Stop after hitting an error. Default OFF  
.databases List names and files of attached databases  
.dump ?TABLE? ... Dump the database in an SQL text format  
If TABLE specified, only dump tables matching  
LIKE pattern TABLE.  
.echo ON|OFF Turn command echo on or off  
.exit Exit this program  
.explain ?ON|OFF? Turn output mode suitable for EXPLAIN on or off.  
With no args, it turns EXPLAIN on.  
.header(s) ON|OFF Turn display of headers on or off  
.help Show this message  
.import FILE TABLE Import data from FILE into TABLE  
.indices ?TABLE? Show names of all indices  
If TABLE specified, only show indices for tables  
matching LIKE pattern TABLE.  
.load FILE ?ENTRY? Load an extension library  
.log FILE|off Turn logging on or off. FILE can be stderr/stdout  
.mode MODE ?TABLE? Set output mode where MODE is one of:  
csv Comma-separated values  
column Left-aligned columns. (See .width)  
html HTML <table> code  
insert SQL insert statements for TABLE  
line One value per line  
list Values delimited by .separator string  
tabs Tab-separated values  
tcl TCL list elements  
.nullvalue STRING Use STRING in place of NULL values  
.output FILENAME Send output to FILENAME  
.output stdout Send output to the screen  
.print STRING... Print literal STRING  
.prompt MAIN CONTINUE Replace the standard prompts  
.quit Exit this program  
.read FILENAME Execute SQL in FILENAME  
.restore ?DB? FILE Restore content of DB (default "main") from FILE  
.schema ?TABLE? Show the CREATE statements  
If TABLE specified, only show tables matching  
LIKE pattern TABLE.  
.separator STRING Change separator used by output mode and .import  
.show Show the current values for various settings  
.stats ON|OFF Turn stats on or off  
.tables ?TABLE? List names of tables  
If TABLE specified, only list tables matching  
LIKE pattern TABLE.  
.timeout MS Try opening locked tables for MS milliseconds  
.trace FILE|off Output each SQL statement as it is run  
.vfsname ?AUX? Print the name of the VFS stack  
.width NUM1 NUM2 ... Set column widths for "column" mode  
.timer ON|OFF Turn the CPU timer measurement on or off

转载于:https://www.cnblogs.com/barneywill/p/11058653.html

[1509647-20190620144118709-1664882316.png]: /images/20211109/fa3dbcba3ad44c2ea57e0306a4623fed.png