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;
postgresql change column type
ALTER TABLE assets ALTER COLUMN name TYPE VARCHAR;
alter column in table postgres
ALTER TABLE table_name
ALTER COLUMN column_name TYPE column_definition;
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
)
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