Question

我正在使用游标来删除一组表。我需要设置标志以确定所有交易是否成功。你能给我一些样例查询吗？

DEclare @intErrorCode int;
DECLARE @TblName NVARCHAR(MAX);
DECLARE TBL_Cursor CURSOR
FOR ( select name from sysobjects where name like 'tbl_flat%');
OPEN TBL_Cursor;
FETCH NEXT FROM TBL_Cursor INTO @TblName
WHILE (@@FETCH_STATUS <> -1)
BEGIN
IF LEN(@TblName) >0
BEGIN
DECLARE @strsql nvarchar(max)
BEGIN
     something here
        BEGIN TRAN
        EXEC sp_executesql @strsql
        COMMIT TRAN
        SELECT @intErrorCode = @@ERROR
        IF (@intErrorCode <> 0) GOTO PROBLEM

END
END
FETCH NEXT FROM TBL_Cursor INTO @TblName
END

 CLOSE TBL_Cursor
 DEALLOCATE TBL_Cursor
PROBLEM:
 IF (@intErrorCode <> 0) BEGIN
 PRINT 'Unexpected error occurred!'
  END

Answer 1

BEGIN TRY
    BEGIN TRANSACTION
        --your code
    EXEC sp_executesql @strsql
    COMMIT TRAN -- Transaction Success!
END TRY
BEGIN CATCH
    IF @@TRANCOUNT > 0
        ROLLBACK TRAN --RollBack in case of Error
    -- you can Raise ERROR with RAISEERROR() Statement including the details of the exception
    RAISERROR(ERROR_MESSAGE(), ERROR_SEVERITY(), 1)
END CATCH

如何在sql中检查循环中的所有事务（游标）是否成功？

1 个答案: