drop constraint psql
ALTER TABLE table_name
DROP CONSTRAINT constraint_name;drop constraint psql
ALTER TABLE table_name
DROP CONSTRAINT constraint_name;postgresql drop primary key constraint
alter table public.test1 drop constraint test1_pkeyremove contraints command psql
ALTER TABLE table_name DROP CONSTRAINT constraint_name;postgres alter table add primary key
-- To set a column as primary key:
ALTER TABLE distributors ADD PRIMARY KEY (tablename);Copyright © 2021 Codeinu
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