В то время как Looping Query дает исключение из памяти

Question

Мне нужно перебрать все данные из таблицы результатов.Например выберите результат получил столбец вызова Количество.Мне нужно значение столбца, чтобы сделать цикл.Но я получаю исключение памяти во время зацикливания.

DECLARE @Qty int
DECLARE @COUNT int
DECLARE @itemcode nvarchar(30)
DECLARE @GRNNo nvarchar(30)
DECLARE @UOM nvarchar(30)
DECLARE @Weight decimal(18,2)
DECLARE @PurchaseDate datetime
DECLARE @Cost decimal(18,2)

SET @COUNT = 1

WHILE exists (Select * from #tempOpening) 
BEGIN
  SELECT top 1 @Qty = QTY, @itemcode = ItemCode, @GRNNo = GRNNo, @Cost=UnitPrice
    , @PurchaseDate=PurchaseDate, @UOM=UOM, @Weight = Weight
  from #tempOpening order by ItemCode

  print @Qty
  print @itemcode
  WHILE @Qty>0
  BEGIN
    SELECT @itemcode AS ItemCode,
      'D'+RIGHT('00000000'+CAST(@COUNT as nvarchar(8)),8) as SerialNo,
      @PurchaseDate PurchaseDate,
      '' TestData,
      ''TestRemark,
      'HQ' Location,
      @UOM BuyType,
      1 qty,
      @Weight Weight,
      @Cost Cost,
      0 PackingFee,
      '' Remarks,
      @GRNNo as GRNNO, 
      null returnDate,
      'SATO' createdBy,
      GETDATE() createDate,
      null CreatedDate,
      null ModifiedDate,
      null SaNo,
      @Qty OriginalQty,
      @Weight

    SET @COUNT = @COUNT+1
    SET @Qty = @Qty -1
  END
  print 'Out loop'
  DELETE FROM #tempOpening where ItemCode= @itemcode and GRNNo = @GRNNo
END

Answer 1

Попробуйте это: если эта работа для вас, я могу объяснить все:

SET NOCOUNT ON

DECLARE @Qty int
DECLARE @COUNT int
DECLARE @itemcode nvarchar(30)
DECLARE @GRNNo nvarchar(30)
DECLARE @UOM nvarchar(30)
DECLARE @Weight decimal(18,2)
DECLARE @PurchaseDate datetime
DECLARE @Cost decimal(18,2)

--Decalre basic table 
DECLARE @tempOpening TABLE 
(
    Id int IDENTITY(1,1),
    QTY int,
    ItemCode nvarchar(30),
    GRNNo nvarchar(30),
    UnitPrice decimal(18,2),
    PurchaseDate datetime,
    UOM nvarchar(30),
    Weight decimal(18,2)
)

DECLARE @site_value INT;
SET @site_value = 0;

--insert test data into basic table
WHILE @site_value <= 4752 
BEGIN

   INSERT INTO @tempOpening(QTY, ItemCode, GRNNo, UnitPrice, PurchaseDate, UOM, Weight)
   VALUES(10,'Code100' + CAST(@site_value AS VARCHAR(10)),'GRNNo',10.2,GETDATE(), 'Unit',5.5);
   SET @site_value = @site_value + 1;
END;

--created a new table for avoiding inner loop
DECLARE @tblQty TABLE
(
    Id INT IDENTITY(1,1),
    RowNo   INT
)
DECLARE @maxQty INT 
SELECT @maxQty =MAX(QTY) FROM @tempOpening
DECLARE @i INT = 1;

--insert data into Qty table with max Qty, this table data will help us to do dynamic query with joining 
WHILE @i <= @maxQty
BEGIN   
   INSERT INTO @tblQty(RowNo)
   VALUES(@i)
   SET @i = @i + 1;
END;

SET @COUNT = 1

--created a temp table to insert all inner loop data, this is the final output data
DECLARE @tblAllData TABLE
(
    Id INT IDENTITY(1,1),
    ItemCode NVARCHAR(30),
    SerialNo NVARCHAR(30),
    PurchaseDate DATETIME,
    TestData NVARCHAR(100),
    TestRemark NVARCHAR(100),
    Location NVARCHAR(100),
    BuyType NVARCHAR(30),
    Qty INT,
    Weight DECIMAL(18,2),
    Cost DECIMAL(18,2),
    PackingFee  INT,
    Remarks NVARCHAR(200),
    GRNNO NVARCHAR(30),
    ReturnDate DATETIME NULL,
    CreatedBy NVARCHAR(100),
    CreateDate DATETIME NULL,
    CreatedDate DATETIME NULL,
    ModifiedDate DATETIME NULL,
    SaNo    INT NULL,
    OriginalQty INT
)

DECLARE C CURSOR FOR 
    SELECT QTY, ItemCode, GRNNo, UnitPrice , PurchaseDate, UOM, Weight from @tempOpening  

OPEN C
FETCH NEXT FROM C INTO @Qty , @itemcode , @GRNNo , @Cost , @PurchaseDate, @UOM , @Weight 

WHILE @@FETCH_STATUS = 0 
BEGIN

    --insert into the all table data
    INSERT INTO @tblAllData(ItemCode, SerialNo, PurchaseDate, TestData, TestRemark, Location, BuyType, Qty, Weight, Cost, PackingFee, Remarks, GRNNO, ReturnDate, 
    CreatedBy, CreateDate, CreatedDate, ModifiedDate, SaNo, OriginalQty)

    SELECT TOP (@Qty) @itemcode AS ItemCode,
      'D'+RIGHT('00000000'+CAST((@COUNT + tbl.RowNo) as nvarchar(8)),8) as SerialNo,
      @PurchaseDate PurchaseDate, '' TestData, ''TestRemark, 'HQ' Location,  @UOM BuyType, 1 qty, @Weight,  @Cost Cost, 0 PackingFee, '' Remarks,
      @GRNNo as GRNNO,  null returnDate, 'SATO' createdBy, GETDATE() createDate, null CreatedDate, null ModifiedDate, null SaNo, @Qty - tbl.RowNo AS OriginalQty
      FROM @tblQty tbl
      ORDER BY tbl.RowNo

    FETCH NEXT FROM C INTO @Qty , @itemcode , @GRNNo , @Cost , @PurchaseDate, @UOM , @Weight   

END

CLOSE C
DEALLOCATE C    

SELECT * FROM @tblAllData