ALTER SCHEMA

Function

ALTER SCHEMA changes the attributes of a schema.

Precautions

Only the owner of a schema, a user granted with the ALTER permission for the schema, or a system administrator has the permission to run the ALTER SCHEMA statement.

Only the schema owner or the system administrator can change the owner of a schema.

Syntax

• Rename a schema.

  1 2	ALTER SCHEMA schema_name RENAME TO new_name;

• Changes the owner of a schema.

  1 2	ALTER SCHEMA schema_name OWNER TO new_owner;

Parameter Description

• schema_name

  Indicates the name of the current schema.

  Value range: An existing schema name.

• RENAME TO new_name

  Renames a schema.

  new_name: new name of the schema

  Value range: A string. It must comply with the naming convention.

• OWNER TO new_owner

  Changes the owner of a schema. To do this as a non-administrator, you must be a direct or indirect member of the new owning role, and that role must have CREATE permission in the database.

  new_owner: new owner of a schema

  Value range: An existing user name/role.

• WITH PERM SPACE

  Changes the storage upper limit of the permanent table in the schema. If a non-administrator user wants to change the storage upper limit, the user must be a direct or indirect member of all new roles, and the member must have the CREATE permission on the database.

  space_limit: storage upper limit of the permanent table in the new schema.

  Value range: A string consists of an integer and unit. The unit can be K/M/G/T/P currently. The unit of parsed value is K and cannot exceed the range that can be expressed in 64 bits, which is 1 KB to 9007199254740991 KB.

Examples

Rename the ds schema to ds_new.

1

ALTER SCHEMA ds RENAME TO ds_new;

Change the owner of ds_new to jack.

1

ALTER SCHEMA ds_new OWNER TO jack;

Helpful Links

CREATE SCHEMA, DROP SCHEMA