Question

我正在尝试存储NOCOUNT状态，以便我可以在程序结束时将其恢复到原始状态，但它只会给我Incorrect syntax near 'NOCOUNT'.错误。

我做错了什么？

IF @@OPTIONS & 512 <> 0     /* check original state of NOCOUNT */
      PRINT N'This user has SET NOCOUNT turned ON.';
  ELSE
      PRINT N'This user has SET NOCOUNT turned OFF.';

DECLARE @NCStat bit
    SET @NCStat = ( @@OPTIONS & 512 )   /* sets @NCStat to original state of NOCOUNT */

SET NOCOUNT ON ;

IF @@OPTIONS & 512 <> 0     /* verify state of NOCOUNT */
      PRINT N'This user has SET NOCOUNT turned ON.';
  ELSE
      PRINT N'This user has SET NOCOUNT turned OFF.';

PRINT N'NCStat = ' + cast(@NCStat as nvarchar) ;        /* verify value of @NCStat */

/* line 23 */  SET NOCOUNT  @NCStat ;       /* return NOCOUNT to original state */

IF @@OPTIONS & 512 <> 0     /* verify state of NOCOUNT */
      PRINT N'This user has SET NOCOUNT turned ON.';
  ELSE
      PRINT N'This user has SET NOCOUNT turned OFF.';
GO

如果注释了第23行，则所有其他行都可以正常工作，但第23行会出现上述错误。

Answer 1

您无法使用变量来设置NOCOUNT：

/* line 23 */  SET NOCOUNT  @NCStat ; /* not legal syntax */

我会这样做：

/* line 23 */
if @NCStat = 1
    SET NOCOUNT ON
else
    SET NOCOUNT OFF

使用局部变量设置NOCOUNT状态

1 个答案: