The ALTER statement

Applies to ✅ Open Source Edition   ✅ Express Edition   ✅ Professional Edition   ✅ Enterprise Edition

ALTER statements are used to alter properties of existing objects in the database catalog.

Table of contents

4.4.1.1.

ALTER DATABASE (new)

4.4.1.1.1.

ALTER DATABASE .. RENAME (new)

4.4.1.1.2.

ALTER DATABASE IF EXISTS (new)

4.4.1.2.

ALTER DOMAIN (new)

4.4.1.2.1.

ALTER DOMAIN .. RENAME (new)

4.4.1.2.2.

ALTER DOMAIN .. SET DEFAULT (new)

4.4.1.2.3.

ALTER DOMAIN .. DROP DEFAULT (new)

4.4.1.2.4.

ALTER DOMAIN .. SET NOT NULL (new)

4.4.1.2.5.

ALTER DOMAIN .. DROP NOT NULL (new)

4.4.1.2.6.

ALTER DOMAIN .. ADD CONSTRAINT (new)

4.4.1.2.7.

ALTER DOMAIN .. RENAME CONSTRAINT (new)

4.4.1.2.8.

ALTER DOMAIN .. RENAME CONSTRAINT IF EXISTS (new)

4.4.1.2.9.

ALTER DOMAIN .. DROP CONSTRAINT (new)

4.4.1.2.10.

ALTER DOMAIN .. DROP CONSTRAINT IF EXISTS (new)

4.4.1.2.11.

ALTER DOMAIN IF EXISTS (new)

4.4.1.3.

ALTER INDEX

4.4.1.3.1.

ALTER INDEX .. RENAME

4.4.1.3.2.

ALTER INDEX IF EXISTS

4.4.1.4.

ALTER SCHEMA

4.4.1.4.1.

ALTER SCHEMA .. RENAME

4.4.1.4.2.

ALTER SCHEMA IF EXISTS

4.4.1.5.

ALTER SEQUENCE

4.4.1.5.1.

ALTER SEQUENCE .. RENAME

4.4.1.5.2.

ALTER SEQUENCE .. CACHE

4.4.1.5.3.

ALTER SEQUENCE .. CYCLE

4.4.1.5.4.

ALTER SEQUENCE .. MINVALUE

4.4.1.5.5.

ALTER SEQUENCE .. t reaches its MAXVALUE

4.4.1.5.6.

ALTER SEQUENCE .. INCREMENT BY

4.4.1.5.7.

ALTER SEQUENCE .. START WITH

4.4.1.5.8.

ALTER SEQUENCE .. RESTART

4.4.1.5.9.

ALTER SEQUENCE IF EXISTS

4.4.1.6.

ALTER TABLE

4.4.1.6.1.

ALTER TABLE .. ADD COLUMN

4.4.1.6.2.

ALTER TABLE .. ADD COLUMN .. FIRST, BEFORE, AFTER

4.4.1.6.3.

ALTER TABLE .. ADD COLUMNS

4.4.1.6.4.

ALTER TABLE .. ADD COLUMN IF NOT EXISTS

4.4.1.6.5.

ALTER TABLE .. ADD PRIMARY KEY

4.4.1.6.6.

ALTER TABLE .. ADD UNIQUE

4.4.1.6.7.

ALTER TABLE .. ADD FOREIGN KEY

4.4.1.6.8.

ALTER TABLE .. ADD CHECK

4.4.1.6.9.

ALTER TABLE .. RENAME

4.4.1.6.10.

ALTER TABLE .. COMMENT

4.4.1.6.11.

ALTER TABLE .. ALTER COLUMN .. SET DEFAULT

4.4.1.6.12.

ALTER TABLE .. ALTER COLUMN .. DROP DEFAULT

4.4.1.6.13.

ALTER TABLE .. ALTER COLUMN .. SET NOT NULL

4.4.1.6.14.

ALTER TABLE .. ALTER COLUMN .. DROP NOT NULL

4.4.1.6.15.

ALTER TABLE .. ALTER COLUMN .. SET TYPE

4.4.1.6.16.

ALTER TABLE .. ALTER CONSTRAINT .. ENFORCED

4.4.1.6.17.

ALTER TABLE .. ALTER CONSTRAINT .. NOT ENFORCED

4.4.1.6.18.

ALTER TABLE .. RENAME COLUMN

4.4.1.6.19.

ALTER TABLE .. RENAME CONSTRAINT

4.4.1.6.20.

ALTER TABLE .. RENAME INDEX

4.4.1.6.21.

ALTER TABLE .. DROP COLUMN

4.4.1.6.22.

ALTER TABLE .. DROP COLUMN RESTRICT

4.4.1.6.23.

ALTER TABLE .. DROP COLUMN CASCADE

4.4.1.6.24.

ALTER TABLE .. DROP COLUMNS

4.4.1.6.25.

ALTER TABLE .. ADD COLUMN IF NOT EXISTS

4.4.1.6.26.

ALTER TABLE .. DROP CONSTRAINT

4.4.1.6.27.

ALTER TABLE .. DROP PRIMARY KEY

4.4.1.6.28.

ALTER TABLE .. DROP UNIQUE

4.4.1.6.29.

ALTER TABLE .. DROP PRIMARY KEY

4.4.1.6.30.

ALTER TABLE .. DROP CONSTRAINT IF EXISTS

4.4.1.6.31.

ALTER TABLE IF EXISTS

4.4.1.7.

ALTER TYPE

4.4.1.7.1.

ALTER TYPE .. RENAME

4.4.1.7.2.

ALTER TYPE .. for enum alterations

4.4.1.8.

ALTER VIEW

4.4.1.8.1.

ALTER VIEW .. COMMENT

4.4.1.8.2.

ALTER VIEW .. RENAME

4.4.1.8.3.

ALTER VIEW IF EXISTS