SQL Eliminar unirse
DELETE P
FROM Product P
LEFT JOIN OrderItem I ON P.Id = I.ProductId
WHERE I.Id IS NULL
dr4ft
DELETE P
FROM Product P
LEFT JOIN OrderItem I ON P.Id = I.ProductId
WHERE I.Id IS NULL DELETE WorkRecord2
FROM WorkRecord2
INNER JOIN Employee
ON EmployeeRun=EmployeeNo
WHERE Company = '1'
AND Date = '2013-05-06';