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7 lines
213 B
MySQL
7 lines
213 B
MySQL
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CREATE VIEW Beratungsanzahl AS (
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SELECT berater_id, count(DISTINCT Berater.berater_id) AS Anzahl
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FROM Berater
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FULL OUTER JOIN Kunden ON Berater.berater_id = Kunden.berater_id
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GROUP BY berater_id
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)
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