SQL Server - 创建存储过程时出错

Question

SELECT count(*) as Colcunt 
FROM tbl_Calibration_Transaction
WHERE CardId = @CardId 
  AND ScalingMachine= @ScalingMachine 

IF (Colcunt = 0 )
BEGIN
    INSERT INTO tbl_Calibration_Transaction

Answer 1

declare @Colcunt int;
Select @Colcunt  = count(*) 
from tbl_Calibration_Transaction 
where CardId = @CardId and ScalingMachine= @ScalingMachine 

IF (@Colcunt = 0 ) BEGIN INSERT INTO tbl_Calibration_Transaction ...

Answer 2

DECLARE @Colcunt INT

SET @Colcunt=(SELECT count(*)
FROM tbl_Calibration_Transaction
WHERE CardId = @CardId AND ScalingMachine= @ScalingMachine )

    IF (@Colcunt = 0 )
        BEGIN
            INSERT INTO tbl_Calibration_Transaction