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On 02/15/07 15:13, Bjørn T Johansen wrote:
> I have a table that I want to find rows that have the same value
> in two fields, e.g. all rows that have the same date and also the
> same productionid... How do I write such an sql statement?
If I understand your question:
SELECT FIELD_1, FIELD_2, COUNT(*)
FROM A_TABLE
WHERE SOME_DATE = 'yyyy-mm-dd'
AND PRODUCTIONID = nnnn
GROUP BY FIELD_1, FIELD_2
HAVING COUNT(*) > 1;
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