"grant all privileges on database" postgres code example

Example 1: grant all privileges database postgres to user

GRANT ALL PRIVILEGES ON ALL TABLES IN SCHEMA schema_name TO username;

Example 2: postgresql grant all privileges on database

GRANT ALL PRIVILEGES ON dbname TO username;

Example 3: grant all privileges database postgres to user

GRANT SELECT, INSERT, UPDATE, DELETE ON ALL TABLES IN SCHEMA schema_name TO username;