MySql数据库版本查询
MySql版本信息的查询：
1、通过mysql -V命令查询
C:\mysql\bin>mysql -V
mysql Ver 12.22 Distrib 4.0.18, for Win95/Win98 (i32)
2、通过mysql模式下的status命令查看状态
mysql> status
--------------
mysql Ver 12.22 Distrib 4.0.18, for Win95/Win98 (i32)
Connection id: 14933
Current database: mysql
Current user: root@localhost
SSL: Not in use
Server version: 4.0.18-nt
Protocol version: 10
Connection: localhost via TCP/IP
Client characterset: latin1
Server characterset: latin1
TCP port: 3306
Uptime: 19 hours 24 min 41 sec
Threads: 2 Questions: 37443 Slow queries: 0 Opens: 355 Flush tables: 1 Open
tables: 9 Queries per second avg: 0.536
--------------
mysql>
3、通过mysql模式下的select语句查询
mysql> select version();
+-----------+
| version() |
+-----------+
| 4.0.18-nt |
+-----------+
1 row in set (0.00 sec)
mysql>
4、通过mysql --help命令进行查看
C:\mysql\bin>mysql --help
mysql Ver 12.22 Distrib 4.0.18, for Win95/Win98 (i32)
Copyright (C) 2002 MySQL AB
......
转帖：http://www.hackbase.com/tech/2009-06-25/53429.html
相关文档：
#!/bin/bash
#删除100个数据库中的1000个表的过期数据
DBHOST="127.0.0.1"
DBPWD="pwd"
DBUSER="root"
MYSQLBIN="/usr/local/mysql/bin/mysql"
for((dbindex = 0;dbindex < 100;dbindex++))
do
for((tabindex = 0;tabindex < 10;tabindex++))
do
if [&n ......
CREATE PROCEDURE pro_page(
in _sql varchar(1000),
in _order varchar(1000),
in _pagecurrent int,
in _pagesize int
)
BEGIN
if _pagesize<=1 then
set _pagesize=20;
end if;
if _pagecurrent < 1 then
set _pagecurrent = 1;
&n ......
格式：grant [PRIVILEGES] on [databaseName.tableName] to [userName]@[host] identified by [password] with grant option;
eg1: grant select on mysql.user to wqh@localhost
eg2:GRANT SELECT,INSERT,UPDATE,DELETE,CREATE ......
这几天学习了触发器的用法，觉得触发器很好用啊。
触发器的基本语法：
CREATE TRIGGER <触发器名><--
{BEFORE | AFTER}
{ INSERT | UPDATE | DELETE }
ON <表名称>
FOR EACH ROW
<触发器SQL语句>
规则：
1.触发器必须有名字，最多64个字符，可能后面会附有分隔符.它和MySQL中其他对象的命名� ......
