SQLite学习笔记二(数据库管理，命令行操作)

1.在下载一个windows下shell程序，下载地址：http://www.sqlite.com/sqlite-shell-win32-x86-3070900.zip

2.下载完成后解压得到sqlite3.exe，放置在任意目录；

3.使用方式：

a.打开数据库

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Microsoft Windows XP [版本 5.1.2600]
(C) 版权所有 1985-2001 Microsoft Corp.
C:\Documents and Settings\socrates.WINXP-DUANYX>cd /d E:\tmp\sqlite_stduy\db
E:\tmp\sqlite_stduy\db>sqlite3.exe sqlite_study.db --参数为要打开的数据库名（存在目录时请带//访问）
SQLite version 3.7.9 2011-11-01 00:52:41
Enter ".help" for instructions
Enter SQL statements terminated with a ";"
sqlite>

b. 查看命令行帮助：

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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 Print STRING in place of NULL values
.output FILENAME Send output to FILENAME
.output stdout Send output to the screen
.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
.width NUM1 NUM2 ... Set column widths for "column" mode
.timer ON|OFF Turn the CPU timer measurement on or off
sqlite>

c.参考以上命令行帮助即可操作数据库，举例如下：

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sqlite> .databases --查看数据库的存放路径
seq name file
--- --------------- ----------------------------------------------------------
0 main E:\tmp\sqlite_stduy\db\sqlite_study.db
sqlite> .tables --查看当前数据库中的表
tbl_product tbl_product1 tbl_product2 tbl_product3
sqlite> select * from tbl_product3; --执行SQL语句
1|iphone4s
sqlite> insert into tbl_product3 values('nokia'); --SQL语句出错提示
Error: table tbl_product3 has 2 columns but 1 values were supplied
sqlite> insert into tbl_product3 values(2, 'nokia');
sqlite> select * from tbl_product3;
1|iphone4s
2|nokia
sqlite>.mode tabs --设置显示模式（以Tab键做为列间间隔符）
sqlite> select * from tbl_product3;
1 iphone4s
2 nokia
sqlite> .show --查看当前shell的环境变量
echo: off
explain: off
headers: off
mode: list
nullvalue: ""
output: stdout
separator: "\t"
stats: off
width:
sqlite>.quit --退出数据库
E:\tmp\sqlite_stduy\db>

其他相关操作请参考.help进行。

SQLite学习笔记二(数据库管理，命令行操作)

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