On Mon, Jan 28, 2008 at 03:11:10PM +0100, H??kan Jacobsson wrote:
> Resulting in 4 columns in the ResultSet like:
>
> count(*)_from_table2_between_fromdate1_and_todate1 = X
> count(*)_from_table2_between_fromdate2_and_todate2 = Y
> count(*)_from_table3_between_fromdate1_and_todate1 = Z
> count(*)_from_table3_between_fromdate2_and_todate2 = V
>
> Is this possible?
How about something like:
SELECT x.tbl, d.mn, COUNT(*)
FROM (
SELECT 'tbl2' AS tbl, id, date FROM table2
UNION ALL
SELECT 'tbl3', id, date FROM table3) x, (VALUES
('2001-1-1','2001-12-31'),
('2002-1-1','2002-12-31')) d(mn,mx)
WHERE x.date BETWEEN d.mn AND d.mx
AND x.id IN (5,6,7,8)
GROUP BY x.tbl, d.mn
ORDER BY x.tbl, d.mn;
Sam
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TIP 6: explain analyze is your friend
