-- Grant all permissions on database
GRANT ALL PRIVILEGES ON DATABASE <db_name> TO <user_name>;

-- Grant connection permissions on database
GRANT CONNECT ON DATABASE <db_name> TO <user_name>;

-- Grant permissions on schema
GRANT USAGE ON SCHEMA public TO <user_name>;

-- Grant permissions to functions
GRANT EXECUTE ON ALL FUNCTIONS IN SCHEMA public TO <user_name>;

-- Grant permissions to select, update, insert, delete, on a all tables
GRANT SELECT, UPDATE, INSERT ON ALL TABLES IN SCHEMA public TO <user_name>;

-- Grant permissions, on a table
GRANT SELECT, UPDATE, INSERT ON <table_name> TO <user_name>;

-- Grant permissions, to select, on a table
GRANT SELECT ON ALL TABLES IN SCHEMA public TO <user_name>;