Question

I’m receiving:

[Err] 1235 - This version of MySQL doesn't yet support 'LIMIT & IN/ALL/ANY/SOME subquery'

While executing the following query:

UPDATE account.account
SET STATUS = 'BLOCK'
WHERE
    id IN (
        SELECT
            p.account_id
        FROM
            log.log
        LEFT JOIN player.player p ON (p.id = log.who)
        WHERE
            vnum = 71054
        AND how = 'BUY'
        GROUP BY
            log.`who`
        HAVING
            COUNT(log.who) > 2
        LIMIT 10
    );

Is there a posibility to rewrite this query so MySQL could execute it?

Answer 1

The solution is to join against a subquery rather than use an IN(). The INNER JOIN will only return rows in account matching ids from the limited subquery. It is then possible to do the UPDATE without a WHERE clause.

Update 
  account.account AS account
  INNER JOIN (
        SELECT
            p.account_id
        FROM
            log.log
            LEFT JOIN player.player p ON (p.id = log.who)
        WHERE
            vnum = 71054
            AND how = 'BUY'
        GROUP BY log.`who`
        HAVING COUNT(log.who) > 2
        LIMIT 10 
   ) subq ON account.id = subq.id
SET STATUS='BLOCK'

To verify the rows that would be modified, use a SELECT first:

SELECT
  account.*
FROM 
  account.account
  INNER JOIN (
            SELECT
                p.account_id
            FROM
                log.log
                LEFT JOIN player.player p ON (p.id = log.who)
            WHERE
                vnum = 71054
                AND how = 'BUY'
            GROUP BY log.`who`
            HAVING COUNT(log.who) > 2
            LIMIT 10 
       ) subq ON account.id = subq.id