小编TKs*_*knl的帖子

SqlConnection con1 = new SqlConnection(strcon);
con1.Open();

string query = " ";
query += " BEGIN TRANSACTION ";
query += " DELETE FROM VehicleRentals FROM VehicleRentals INNER JOIN Vehicles N VehicleRentals.VehicleID = Vehicles.VehicleID WHERE LicensePlate=@LicensePlate ";
query += " DECLARE @x int ";
query += " SELECT @x = VehicleTypeCode FROM Vehicles WHERE LicensePlate=@LicensePlate ";
query += " DELETE FROM Manufacturers FROM Manufacturers INNER JOIN Models ON Manufacturers.ManufacturerCode = Models.ManufacturerCode INNER JOIN Vehicles ON Models.ModelID = Vehicles.ModelID WHERE LicensePlate=@LicensePlate ";
query …