Add Column To Existing Table In Postgres Code Example


Example 1: postgresql add column with constraint

ALTER TABLE customers  ADD COLUMN contact_name VARCHAR NOT NULL;

Example 2: alter table add column psql

ALTER TABLE table_name ADD column_name data_type column_constraint;

Example 3: alter table add multiple columns postgresql

ALTER TABLE customer  ADD COLUMN fax VARCHAR, ADD COLUMN email VARCHAR;

Example 4: alter table add column postgres

Alter Postgres Table

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