UPDATE T_CSENGETESIRENDORA SET C_KEZDETE = CAST(CAST(C_KEZDETE AS TIME) AS DATETIME)
WHERE C_KEZDETE >= '19010102'
GO

UPDATE T_CSENGETESIRENDORA SET C_VEGE = CAST(CAST(C_VEGE AS TIME) AS DATETIME)
WHERE C_VEGE >= '19010102'
GO