SELECT SUM(tutar) AS TUTAR FROM [GRUP_KİSİ_M] WHERE (idi = ?) GROUP BY islem HAVING (islem = 'SATIŞ')
H4K4N
Merhaba,
Örneklere bir gözatabilirsiniz
https://stackoverflow.com/questions/19115040/replace-null-with-blank-value-or-zero-in-sql-server/19115166