Awesome! Let's get to the first one!
Create a function named lock_user(user_id int) that updates the record with the given ID in the user_account table and sets the is_locked column to TRUE and the locked_date column to the current date. The new function shouldn't return any value.
If there is no user with the given user_id in the user_account table, you should raise an exception:
'Nonexistent user ID --> %', user_id
With the following hint:
'Please check the user ID'
We've removed the template code, but check out the hint below if you need it.
CREATE FUNCTION /* function name */(/* argument */) RETURNS /* return type */ AS $$ BEGIN /* add your logic here */ END; $$ LANGUAGE plpgsql;
