COUNT

クエリ条件に一致する行の数を返します。

SELECT COUNT(*) FROM Workers WHERE AssociateOID = 'G3349PZGBADQY8H8'

COUNT(DISTINCT)

クエリ条件に一致する、null 以外の個別のフィールド値の数を返します。

SELECT COUNT(DISTINCT AssociateOID) AS DistinctValues FROM Workers WHERE AssociateOID = 'G3349PZGBADQY8H8'

AVG

カラムの値の平均を返します。

SELECT WorkerID, AVG(AnnualRevenue) FROM Workers WHERE AssociateOID = 'G3349PZGBADQY8H8'  GROUP BY WorkerID

MIN

カラムの値の最小値を返します。

SELECT MIN(AnnualRevenue), WorkerID FROM Workers WHERE AssociateOID = 'G3349PZGBADQY8H8' GROUP BY WorkerID

MAX

カラムの値の最大値を返します。

SELECT WorkerID, MAX(AnnualRevenue) FROM Workers WHERE AssociateOID = 'G3349PZGBADQY8H8' GROUP BY WorkerID

SUM

カラムの値の合計を返します。

SELECT SUM(AnnualRevenue) FROM Workers WHERE AssociateOID = 'G3349PZGBADQY8H8'