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
- ShowLikeOrWhere
ShowDatabasesStmt ::=
"SHOW" "DATABASES" ShowLikeOrWhere?
ShowLikeOrWhere ::=
"LIKE" SimpleExpr
| "WHERE" Expression
示例
SHOW DATABASES;
+--------------------+
| Database |
+--------------------+
| INFORMATION_SCHEMA |
| PERFORMANCE_SCHEMA |
| mysql |
| test |
+--------------------+
4 rows in set (0.00 sec)
CREATE DATABASE mynewdb;
Query OK, 0 rows affected (0.10 sec)
SHOW DATABASES;
+--------------------+
| Database |
+--------------------+
| INFORMATION_SCHEMA |
| PERFORMANCE_SCHEMA |
| mynewdb |
| mysql |
| test |
+--------------------+
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。