Question

Sorry for this simple question, but i’m missing the forest through the trees.

These are my tables (i left the sparepart-table because i’m only looking for two special fk’s):

_{(source: bilder-hochladen.net)}

I need the distinct rows from tabData which are referenced in the child-table tabDataDetail with fiSparePart=8837 and 8969.
The following gives me only that rows which have at least one sparepart, but i need those which have both. They are also not distinct, because of the having clause.

SELECT     tabData.idData
FROM         tabData INNER JOIN
                      tabDataDetail ON tabData.idData = tabDataDetail.fiData
GROUP BY tabData.idData, tabDataDetail.fiSparePart
HAVING   tabDataDetail.fiSparePart IN (8837, 8969)
ORDER BY tabData.idData

Thanks for your time.

Answer 1

This should give you the tabData records that have both 8837 and 8969 as spare parts. You can use DISTINCT, and you don’t need the group by.

SELECT  
 DISTINCT tabData.idData
 FROM    tabData 
 WHERE   EXISTS (SELECT *
                  FROM tabDataDetail
                 WHERE tabData.idData = tabDataDetail.fiData
                   AND tabDataDetail.fiSparePart = 8837)
   AND   EXISTS (SELECT *
                  FROM tabDataDetail
                 WHERE tabData.idData = tabDataDetail.fiData
                   AND tabDataDetail.fiSparePart = 8969)
 ORDER BY tabData.idData