ALTER SCHEMA

Description

Alters schema attributes.

Precautions

• Only the owner of a schema or users granted with the ALTER permission on the schema can run the ALTER SCHEMA command. System administrators have this permission by default. To change the owner of a schema, you must be the owner of the schema or a system administrator and a member of the new owner role.
• Only the initial user is allowed to change the owner of the pg_catalog system schema. Changing the names of the built-in system schemas may make some functions unavailable or even affect the normal running of the database. By default, the names of the built-in system schemas cannot be changed. To ensure forward compatibility, you can change the names of the built-in system schemas only when the system is being started or upgraded or when allow_system_table_mods is set to on.

Syntax

• Rename a schema.

  1 2	ALTER SCHEMA schema_name RENAME TO new_name;

• Change the owner of a schema.

  1 2	ALTER SCHEMA schema_name OWNER TO new_owner;

Parameters

• schema_name

  Specifies the name of an existing schema.

  Value range: an existing schema name.

• RENAME TO new_name

  Renames a schema. If a non-SYSADMIN user wants to change the schema name, the user must have the CREATE permission on the database.

  new_name: new name of the schema.

  Value range: a string that complies with the Identifier Naming Conventions.

• OWNER TO new_owner

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

  new_owner: new owner of the schema.

  Value range: an existing username or role name.

Examples

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-- Create the ds schema.
openGauss=# CREATE SCHEMA ds;

-- Rename the current schema ds to ds_new.
openGauss=# ALTER SCHEMA ds RENAME TO ds_new;

-- Create user jack.
openGauss=# CREATE USER jack PASSWORD '********';

-- Change the owner of ds_new to jack.
openGauss=# ALTER SCHEMA ds_new OWNER TO jack;


-- Drop user jack and schema ds_new.
openGauss=# DROP SCHEMA ds_new;
openGauss=# DROP USER jack;

Helpful Links

CREATE SCHEMA and DROP SCHEMA