Mysql那些事儿之(二)有关数据库的操作_MySQL
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Mysql那些事儿之(二)有关数据库的操作 Mysql有关数据库的操作mysql -u用户名 -p密码登录mysql数据库。 1.显示已有的数据库 命令：SHOW DATABASES;用于显示已经创建的数据库信息。 命令：SHOW DATABASES [LIKE char]这个命令意思是显示数据库，和后面所给的字符匹配。如果使用[LIKE char]，那么char字符串可以是一个使用mysql的“%”和“_”通配符的字符串。比如SHOW DATABASES LIKE 'my%'；这是显示数据库名称以‘%’开头的。 2.创建数据库 命令：CREATE DATABASE dbname； 这条语句的功能是创建一个名称为dbname的数据库。如果数据库名称有重复，会报错。3.删除数据库 命令：DROP DATABASE [IF EXISTS] dbname； 这条语句的功能是删除数据库名称为dbname的数据库。 小心使用。使用[IF EXISTS]用于阻止表不存在而执行删除操作所报的错误。4.选用数据库 命令：USE dbname； 这条语句的功能是选用数据库名称为dbname的数据库。 bitsCN.com
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