Now we're using a database from a smartphone. It has a phone_book table. It has the columns id, first_name, last_name an
DELETE FROM phone_book WHERE first_name ="Jonathan", last_name="Judy",
Why cant we use (,) instead of AND
Steven Parker207,993 Points
It's an SQL syntax requirement, but it would also be ambiguous.
The main reason is that it's required by the SQL syntax. You have to "play by the rules".
But if you were allowed to separate conditions with commas, it would not be clear if both conditions should be enforced (as with
AND) or just one of the conditions (as with