SHOW-DATABASES

Name

SHOW DATABASES

Description

This statement is used to display the currently visible db

grammar:

  1. SHOW DATABASES [FROM catalog] [filter expr];

illustrate:

  1. SHOW DATABASES will get all database names from current catalog.
  2. SHOW DATABASES FROM catalog will all database names from the catalog named ‘catalog’.
  3. SHOW DATABASES filter_expr will get filtered database names from current catalog.
  4. SHOW DATABASES FROM catalog filter_expr is not support yet.

Example

  1. Display all the database names from current catalog.

    1. SHOW DATABASES;
    1. +--------------------+
    2. | Database           |
    3. +--------------------+
    4. | test               |
    5. | information_schema |
    6. +--------------------+

  2. Display all database names from the catalog named ‘hms_catalog’.

    1. SHOW DATABASES from hms_catalog;
    1. +---------------+
    2. | Database      |
    3. +---------------+
    4. | default       |
    5. | tpch          |
    6. +---------------+

  3. Display the filtered database names from current catalog with the expr ‘like’.

    1. SHOW DATABASES like 'infor%';
    1. +--------------------+
    2. | Database           |
    3. +--------------------+
    4. | information_schema |
    5. +--------------------+

Keywords

  1. SHOW, DATABASES

Best Practice