sql - 使用 CTE 时执行 CRUD 操作时对象名称无效 'Table'

Question

您好，我目前正在创建 My SP，它根据我的 select 语句给出的结果插入和检测记录。

这是我的示例代码:

DECLARE @PickListBatchName varchar(200),
@PartNumber varchar(50),
@QTY int;

SET @PickListBatchName='TEST1';
SET @PartNumber='PN1';
SET @QTY=1;


      --STEP 1 Add Result to TempTable
      With SN as
      (
        SELECT TOP (@QTY) 
           pb.PickListBatchId
           ,pt.PickListTRANId
           ,pt.SerialNumber
           ,pt.Createdby
           ,pt.CreatedDT
FROM PickListTRAN pt 
            LEFT JOIN PickListBatchDetail pdb ON pdb.PickListBatchDetailId=pt.PickListBatchDetailId
            LEFT JOIN PickListBatch pb ON pdb.PickListBatchId=pb.PickListBatchId
where  pb.PickListBatchName=@PickListBatchName AND pdb.PartNumber=@PartNumber
      )


    --STEP 2: INSERT SN TO PicklistTranCancel
    INSERT INTO PickListTRANCancel
   (
   PickListBatchId
   ,SerialNumber
   ,CreatedBy
   ,CreatedDT
   ) 
   (SELECT  
           PickListBatchId,
           SerialNumber,
           Createdby,
           CreatedDT
    FROM SN);

    --STEP 3: DELETE Records on PicklistTran

    DELETE FROM PicklistTran where picklistTranId IN (SELECT PickListTRANId FROM SN)

结果:

(1 row(s) affected)
Msg 208, Level 16, State 1, Line 49
Invalid object name 'SN'.  --error on delete statement

在第 3 步，delete 语句无法读取 SN 表。也许我在那部分遗漏了一些东西。

在此致谢

Answer 1

在您的代码中，CTE 只能在插入语句之前访问。如果您需要访问 CTE 表，请尝试将 CTE 数据填充到 @TempTable 中，然后在您的删除语句中访问它。您可以修改代码以将值存储到临时表中

 INSERT INTO PickListTRANCancel

  (
  PickListBatchId
  ,SerialNumber
  ,CreatedBy
  ,CreatedDT
  ) 
Output   Inserted.PickListBatchId,Inserted.SerialNumber,Inserted.CreatedBy,
Inserted.CreatedDT into @TempTable
  (SELECT  
       PickListBatchId,
       SerialNumber,
       Createdby,
       CreatedDT
FROM SN);

   DELETE FROM PicklistTran where picklistTranId IN
   (SELECT PickListTRANId FROM @TempTable)

我尚未验证代码，但这样您就可以构建查询。