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Aggregationsfunktonen
COUNT(*)
COUNT ([DISTINCT] <Attribut-Name>)
SUM ([DISTINCT] <Attribut-Name>)
AVG ([DISTINCT] <Attribut-Name>)
MIN (<Attribut-Name>)
MAX (<Attribut-Name>)
COUNT ([DISTINCT] <Attribut-Name>)
SUM ([DISTINCT] <Attribut-Name>)
AVG ([DISTINCT] <Attribut-Name>)
MIN (<Attribut-Name>)
MAX (<Attribut-Name>)