Question

I’ve 2 tables, one with all my journal lines (table name: BoekstukRegels) and one with all journal descriptions (table name: balansen).

This works fine:

SELECT SUM(BoekRegelBedrag) AS TOTAL, BoekRegelGrootboekNr, BoekRegelPeriode
FROM BoekstukRegels
WHERE BoekregelUserId = 45 AND BoekRegelPeriode LIKE '2012%'
GROUP BY BoekRegelGrootboekNr

But the problem is I dont get the description. So I tried this:

 SELECT SUM(BoekRegelBedrag) as total, BoekRegelPeriode, BoekRegelGrootboekNr, BaOmschrijving, BaSoort
 FROM BoekstukRegels
 LEFT JOIN balansen ON BoekRegelGrootboekNr = BaGbNumber
 WHERE BoekregelUserId = 45 AND BoekRegelPeriode LIKE '2012%' AND BaSoort = 2
 GROUP BY BoekRegelGrootboekNr

This gets me the description so that worked fine but the problem is that the totals dont match. I know what the problem is and that is because there are duplicates in the table balansen.

So in one way or another the table balansen needs a group by also but i cant get it working so i hope someone else can help me further.

Thanks in advance!

Answer 1

Do you know how to do the necessary group by on the other table to get the results you want? If so, then you can do something like this:

SELECT SUM(BoekRegelBedrag) as total, 
       BoekRegelPeriode, 
       BoekRegelGrootboekNr, 
       BaOmschrijving, 
       BaSoort

FROM   BoekstukRegels LEFT JOIN 
       (SELECT field1, field2, etc. 
        FROM   balansen 
        GROUP BY FieldToGroupOn) tbl

       ON BoekRegelGrootboekNr = BaGbNumber

WHERE    BoekregelUserId = 45 AND BoekRegelPeriode LIKE '2012%' AND BaSoort = 2
GROUP BY BoekRegelGrootboekNr