top of page
![](https://static.wixstatic.com/media/11062b_fac51a38acf24ea2aa030216e01a0ea3f000.jpg/v1/fill/w_288,h_162,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/11062b_fac51a38acf24ea2aa030216e01a0ea3f000.jpg)
ALTER DOMAIN name
{ SET DEFAULT expression | DROP DEFAULT }
ALTER DOMAIN name
{ SET | DROP } NOT NULL
ALTER DOMAIN name
ADD domain_constraint [ NOT VALID ]
ALTER DOMAIN name
DROP CONSTRAINT [ IF EXISTS ] constraint_name [ RESTRICT | CASCADE ]
ALTER DOMAIN name
RENAME CONSTRAINT constraint_name TO new_constraint_name
ALTER DOMAIN name
VALIDATE CONSTRAINT constraint_name
ALTER DOMAIN name
OWNER TO new_owner
ALTER DOMAIN name
RENAME TO new_name
ALTER DOMAIN name
SET SCHEMA new_schema
Example
ALTER DOMAIN zipcode SET NOT NULL;
ALTER DOMAIN zipcode DROP NOT NULL;
ALTER DOMAIN zipcode ADD CONSTRAINT zipchk CHECK (char_length
(VALUE) = 5);
bottom of page