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Rechercher dans le manuel MySQL

25.24 The INFORMATION_SCHEMA SCHEMATA Table

Contents

A schema is a database, so the SCHEMATA table provides information about databases.

The SCHEMATA table has these columns:

  • CATALOG_NAME

    The name of the catalog to which the schema belongs. This value is always def.

  • SCHEMA_NAME

    The name of the schema.

  • DEFAULT_CHARACTER_SET_NAME

    The schema default character set.

  • DEFAULT_COLLATION_NAME

    The schema default collation.

  • SQL_PATH

    This value is always NULL.

  • DEFAULT_ENCRYPTION

    The schema default encryption. This column was added in MySQL 8.0.16.

Schema names are also available from the SHOW DATABASES statement. See Section 13.7.6.14, “SHOW DATABASES Syntax”. The following statements are equivalent:

  1. SELECT SCHEMA_NAME AS `Database`
  2.   FROM INFORMATION_SCHEMA.SCHEMATA
  3.   [WHERE SCHEMA_NAME LIKE 'wild']
  4.  
  5. SHOW DATABASES
  6.   [LIKE 'wild']

You see only those databases for which you have some kind of privilege, unless you have the global SHOW DATABASES privilege.

Caution

Because any static global privilege is considered a privilege for all databases, any static global privilege enables a user to see all database names with SHOW DATABASES or by examining the SCHEMATA table of INFORMATION_SCHEMA, except databases that have been restricted at the database level by partial revokes.


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