Add Column In Table In Postgresql Code Example


Example 1: postgresql add column with constraint

ALTER TABLE customers  ADD COLUMN contact_name VARCHAR NOT NULL;

Example 2: postgresql insert column

ALTER TABLE table_name ADD COLUMN new_column_name data_type constraint;

Example 3: postgres how to add field created at

CREATE TABLE my_table ( 	id serial NOT NULL,     user_name text, 	created_at timestamp with time zone DEFAULT CURRENT_TIMESTAMP //here )

Example 4: alter table add column postgres

Alter Postgres Table

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