Question

DELETE FROM mytable WHERE id IN (SELECT id FROM mytable where roll=1)

I have a table mytable. My above query is throwing an error.

You can’t specify target table ‘mytable’ for update in FROM clause

Answer 1

From the MySQL documentation:

Currently, you cannot delete from a table and select from the same table in a subquery.

Fortunately, you don’t need the subquery. Just do:

DELETE FROM mytable WHERE roll=1

It’s much shorter and clearer to boot.