SHOW DATABASES

Description

This statement is used to display the currently visible database.

Syntax

SHOW DATABASES [FROM <catalog>] [<filter_expr>];

Optional parameters

** 1. <catalog>**

Corresponding catalog

** 2. <filter_expr>**

Filter by specified conditions

Return Value

Column	Description
Database	Database Name

Permission Control

The user executing this SQL command must have at least the following permissions:

Permissions	Object	Notes
SELECT_PRIV	Corresponding database	Requires read permission on the corresponding database

示例

• Displays the names of all current databases.

  SHOW DATABASES;

  +--------------------+
  | Database           |
  +--------------------+
  | test               |
  | information_schema |
  +--------------------+

• Will display all database names in hms_catalog.

  SHOW DATABASES FROM hms_catalog;

  +---------------+
  | Database      |
  +---------------+
  | default       |
  | tpch          |
  +---------------+

• Displays the names of all databases currently filtered by the expression like 'infor%'.

  SHOW DATABASES like 'infor%';

  +--------------------+
  | Database           |
  +--------------------+
  | information_schema |
  +--------------------+