SHOW DATABASES

SHOW DATABASES 语句用于显示当前用户有权访问的数据库列表。当前用户无权访问的数据库将从列表中隐藏。information_schema 数据库始终出现在列表的最前面。

SHOW SCHEMAS 是 SHOW DATABASES 语句的别名。

语法图

ShowDatabasesStmt:

ShowDatabasesStmt

SHOW DATABASES - 图1

ShowLikeOrWhere

SHOW DATABASES - 图2

1. ShowDatabasesStmt ::=
2. "SHOW" "DATABASES" ShowLikeOrWhere?

4. ShowLikeOrWhere ::=
5. "LIKE" SimpleExpr
6. |   "WHERE" Expression

示例

1. SHOW DATABASES;

1. +--------------------+
2. | Database           |
3. +--------------------+
4. | INFORMATION_SCHEMA |
5. | PERFORMANCE_SCHEMA |
6. | mysql              |
7. | test               |
8. +--------------------+
9. 4 rows in set (0.00 sec)

1. CREATE DATABASE mynewdb;

1. Query OK, 0 rows affected (0.10 sec)

1. SHOW DATABASES;

1. +--------------------+
2. | Database           |
3. +--------------------+
4. | INFORMATION_SCHEMA |
5. | PERFORMANCE_SCHEMA |
6. | mynewdb            |
7. | mysql              |
8. | test               |
9. +--------------------+
10. 5 rows in set (0.00 sec)

MySQL 兼容性

SHOW DATABASES 语句与 MySQL 完全兼容。如发现任何兼容性差异，请尝试 TiDB 支持资源。

另请参阅