Question

In the Subquery, I would like to be able to add in the WHERE clause:

duedate<=quotehed.duedate  

quotehed.duedate is in the main query. I don’t know how to bring the quotehed.duedate into the subquery because it is not in the same table as my subquery. I also don’t know how to make sure the quotehed.duedate will pull in the due date from the quote number that is selected from the parameter @p_quotenum.

My enitre query follows below. I greatly appreciate any help! Thanks!

SELECT partwhse.warehousecode,
       partwhse.allocqty,
       partwhse.onhandqty,
       quotehed.quotenum,
       quotehed.custnum,
       quotehed.datequoted,
       quotehed.duedate,
       quotedtl.quoteline,
       quotedtl.partnum,
       quotedtl.reqshipdate,
       quotedtl.sellingexpectedqty,
       plantwhse.plant,
       part.partdescription,
       t_partdtl1.totaldemand
FROM   part
       INNER JOIN quotedtl
         ON part.company = quotedtl.company
            AND part.partnum = quotedtl.partnum
       LEFT OUTER JOIN (SELECT company,
                               partnum,
                               requirementflag,
                               SUM(quantity) AS totaldemand,
                               plant,
                               duedate
                        FROM   partdtl AS partdtl_1
                        WHERE  ( company = 'lot' )
                               AND ( requirementflag = '1' )
                               AND ( plant = @p_plant )
                        GROUP  BY company,
                                  partnum,
                                  requirementflag,
                                  plant,
                                  duedate) AS t_partdtl1
         ON quotedtl.company = t_partdtl1.company
            AND quotedtl.partnum = t_partdtl1.partnum
       LEFT OUTER JOIN partwhse
                       INNER JOIN plantwhse
                         ON partwhse.company = plantwhse.company
                            AND partwhse.partnum = plantwhse.partnum
                            AND partwhse.warehousecode = plantwhse.warehousecode
         ON quotedtl.company = plantwhse.company
            AND quotedtl.partnum = plantwhse.partnum
       RIGHT OUTER JOIN quotehed
         ON quotedtl.company = quotehed.company
            AND quotedtl.quotenum = quotehed.quotenum
WHERE  ( quotehed.quotenum = @p_quotenum )
       AND ( quotehed.company = 'lot' )
       AND ( plantwhse.plant = @p_plant )
ORDER  BY quotehed.quotenum,
          quotedtl.quoteline 

Answer 1

You should try to reorder your joins to place the subquery after you join quotehed. Once that is done then join the subquery to the quotehed table using the date filter, similar to this:

SELECT partwhse.warehousecode, 
    partwhse.allocqty, 
    partwhse.onhandqty, 
    quotehed.quotenum, 
    quotehed.custnum, 
    quotehed.datequoted, 
    quotehed.duedate, 
    quotedtl.quoteline, 
    quotedtl.partnum, 
    quotedtl.reqshipdate, 
    quotedtl.sellingexpectedqty, 
    plantwhse.plant, 
    part.partdescription, 
    t_partdtl1.totaldemand
FROM part
INNER JOIN quotedtl
    ON part.company = quotedtl.company 
    AND part.partnum = quotedtl.partnum 
LEFT JOIN plantwhse
    ON quotedtl.company = plantwhse.company 
    AND quotedtl.partnum = plantwhse.partnum 
LEFT OUTER JOIN partwhse
    ON partwhse.company = plantwhse.company 
    AND partwhse.partnum = plantwhse.partnum 
    AND partwhse.warehousecode = plantwhse.warehousecode 
RIGHT OUTER JOIN quotehed
    ON quotedtl.company = quotehed.company 
    AND quotedtl.quotenum = quotehed.quotenum
LEFT OUTER JOIN
(
    SELECT company, partnum, requirementflag, SUM(quantity) AS totaldemand, plant, duedate
    FROM partdtl AS partdtl_1
    WHERE (company = 'lot') 
        AND (requirementflag = '1') 
        and (plant=@p_plant)
    GROUP BY company, partnum, requirementflag, plant, duedate
) AS t_partdtl1 
    ON quotedtl.company = t_partdtl1.company 
    AND quotedtl.partnum = t_partdtl1.partnum 
    AND t_partdtl1.duedate < quotehed.duedate
WHERE (quotehed.quotenum = @p_quotenum) 
    AND (quotehed.company = 'lot') 
    AND (plantwhse.plant = @p_plant)
ORDER BY quotehed.quotenum, quotedtl.quoteline