Sub query question

Question

I am working on the below query and I am wondering how i can only get columns where the contamt is over 1000000. I do not have this contamt column in the planhold table and I am not sure how can fix the query.
SELECT   letting, CALL, billto, vendor
    FROM planhold
   WHERE CALL IN (
            SELECT l.CALL
              FROM tplcp.letprop l
             WHERE contamt > 1000000
               AND letting BETWEEN '07072701' AND '10072300')
     AND letting BETWEEN '07072701' AND '10072300'
WHERE contamt > 1000000------------------but this contamt column does not exist in the planhold table
ORDER BY letting, CALL

Answer 1

Try each of the following and chose the one that performs best...
SELECT   letting, CALL, billto, vendor
    FROM planhold
   WHERE (letting,CALL) IN (
            SELECT l.letting, call
              FROM tplcp.letprop l
             WHERE contamt > 1000000
               AND letting BETWEEN '07072701' AND '10072300')
ORDER BY letting, CALL
SELECT  letting, CALL, billto, vendor
    FROM planhold
   WHERE EXISTS (
            SELECT null
              FROM tplcp.letprop l
             WHERE contamt > 1000000
               AND l.letting= planhold.letting
               AND l.call=planhold.call
AND letting BETWEEN '07072701' AND '10072300'
ORDER BY letting, CALLRegards,
Bob