Sub-select in a where-in clause

Question

Attempting to delete a list of id's generated by a sub-select in a single statement. Is this possible? I've been trying the following:

[edit] corrected query

DELETE from store 
WHERE  id in ( SELECT store.id 
               FROM   storeInfo 
               JOIN   store ON storeInfo.store_id = store.id
               WHERE  storeInfo.type = 17 )

But this is incorrect syntax ... not sure how to build this properly.

Answer 1

DELETE store
FROM store
JOIN storeInfo 
    ON storeInfo.store_id = store.id
WHERE storeInfo.type = 17

Answer 2

After the typo update to the question - you don't need a JOIN in the subquery. You can just return storeInfo.store_id from the IN() subquery.

DELETE FROM `store` WHERE `id` IN (SELECT `store_id` FROM `storeInfo` WHERE `type` = 17)

MySQL would not permit you to use the table store in the subquery and then delete rows from it. However, you can use storeInfo since it joins directly with store_id .

If you need to delete from both of these tables (such as if the rows in storeInfo become orphaned when their parents are deleted from store ), use the JOIN syntax instead:

DELETE
  /* Syntax to delete rows from both tables */
  store, storeInfo
FROM 
  store JOIN storeInfo ON store.id = storeInfo.store_id
WHERE storeInfo.type = 17

Review the MySQL DELETE syntax reference for full details.

Answer 3

You can do the join directly into the delete

delete store from store 
  JOIN storeInfo ON storeInfo.store_id = store.id 
  WHERE  store.type = 17;