LaTeX-examples/documents/musterloesung-db-klausur-b/d3e.sql

SELECT berater_id, name, anzahl
    FROM Beratungsanzahl
    JOIN Berater ON Berater.berater_id = Beratungsanzahl.berater_id
    WHERE anzahl = (SELECT MAX(anzahl) FROM Beratungsanzahl)
misc 2013-07-27 15:28:36 +02:00			`SELECT berater_id, name, anzahl`
			`FROM Beratungsanzahl`
			`JOIN Berater ON Berater.berater_id = Beratungsanzahl.berater_id`
MAX in WHERE not possible 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). 2013-07-30 11:18:13 +02:00			`WHERE anzahl = (SELECT MAX(anzahl) FROM Beratungsanzahl)`