本教程操作环境:windows7系统、mysql8版本、Dell G3电脑。
要列出MySQL服务器主机上的所有数据库,请使用SHOW DATABASES命令,如下所示:
SHOW DATABASES;
例如,要列出本地MySQL数据库服务器中的所有数据库,请首先登录到数据库服务器,如下所示:
C:\Users\Administrator>mysql -u root -pEnter password: ******Welcome to the MySQL monitor. Commands end with ; or \g.Your MySQL connection id is 7Server version: 5.7.9 MySQL Community Server (GPL)Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.Oracle is a registered trademark of Oracle Corporation and/or itsaffiliates. Other names may be trademarks of their respectiveowners.Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.mysql>
然后使用SHOW DATABASES命令:
mysql> SHOW DATABASES;+--------------------+| Database |+--------------------+| information_schema || crmdb || mysql || newdb || performance_schema || testdb || yiibaidb || yiibaidb_backup |+--------------------+8 rows in set
SHOW SCHEMAS命令是SHOW DATABASES的同义词,因此以下命令将返回与上述相同的结果:
mysql> SHOW SCHEMAS;+--------------------+| Database |+--------------------+| information_schema || crmdb || mysql || newdb || performance_schema || testdb || yiibaidb || yiibaidb_backup |+--------------------+8 rows in set
如果要查询与特定模式匹配的数据库,请使用LIKE子句,如下所示:
SHOW DATABASES LIKE pattern;
例如,以下语句返回以字符串“schema”结尾的数据库;
mysql> SHOW DATABASES LIKE '%schema';+--------------------+| Database (%schema) |+--------------------+| information_schema || performance_schema |+--------------------+2 rows in set
重要的是要注意,如果MySQL数据库服务器以-skip-show-database启动,则除非具有SHOW DATABASES权限,否则不能使用SHOW DATABASES语句。
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