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MAX in WHERE not possible

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You cannot use MAX() in a WHERE clause, instead use a subquery.

The ORDER BY is also unneeded, because we only select the maximum. So what to order, there is only one number (even if multiple entries with the same number).
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Stefan Koch 2013-07-30 11:18:13 +02:00
parent d7e7613c30
commit 097d360423
1 changed files with 1 additions and 2 deletions
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documents/musterloesung-db-klausur-b/d3e.sql
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@ -1,5 +1,4 @@
SELECT berater_id, name, anzahl
FROM Beratungsanzahl
JOIN Berater ON Berater.berater_id = Beratungsanzahl.berater_id
WHERE anzahl = MAX(anzahl)
ORDER BY anzahl DESC
WHERE anzahl = (SELECT MAX(anzahl) FROM Beratungsanzahl)