postgresql add column with constraint
ALTER TABLE customers
ADD COLUMN contact_name VARCHAR NOT NULL;
postgresql add column with constraint
ALTER TABLE customers
ADD COLUMN contact_name VARCHAR NOT NULL;
alter table add column psql
ALTER TABLE table_name
ADD column_name data_type column_constraint;
alter table add multiple columns postgresql
ALTER TABLE customer
ADD COLUMN fax VARCHAR,
ADD COLUMN email VARCHAR;
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
)
PostgreSQL add column
ALTER TABLE mytable
ADD COLUMN column1 VARCHAR,
ADD COLUMN column2 REAL;
INSERT INTO mytable (column1)
VALUES (v1), (v2), (vn);
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