我有一个SQL游标,我遇到了问题。当我从游标内部删除IF @debug = 1
语句时,只会更新FETCH
中的第一条记录,但如果我离开IF @debug = 1
,则会更新所有必需的记录。任何关于为什么会发生这种情况的想法,我知道我的Cursor最有可能出现问题?代码如下:
DECLARE Verify_Shipment_Cur CURSOR LOCAL FAST_FORWARD READ_ONLY FOR
SELECT DISTINCT lpd_shipment_id, lpd_po_number, lpd_customer_id, lpd_sku, lpd_lottable01, lpd_lottable02, lpd_lottable03, lpd_putaway_zone, lpd_pdt
FROM PO_DETAIL01(NOLOCK)
WHERE lpd_shipment_id = @i_SHIPMENT_ID
AND lpd_po_number = @i_POKEY
AND lpd_customer_id = @i_CUSTOMER_ID
AND lpd_status = @AvailableStatus
OPEN Verify_Shipment_Cur
WHILE @ShipmentSKUCount >= @ShipmentSKUCountCur
BEGIN
FETCH NEXT FROM Verify_Shipment_Cur INTO @ShipmentID, @POKey, @CustomerID, @SKU, @Lottable01, @Lottable02, @Lottable03, @PutawayZone, @PDT
IF EXISTS(SELECT 1 FROM PO_DETAIL(NOLOCK) WHERE pd_asn_number = @i_SHIPMENT_ID AND pd_po_number = @i_POKEY
AND pd_sku = @SKU AND pd_type = @ShmtType AND pd_ordered_qty <> pd_received_qty)
BEGIN
UPDATE PO_DETAIL
SET pd_adjusted_qty = pd_ordered_qty - pd_received_qty
WHERE pd_asn_number = @i_SHIPMENT_ID
AND pd_po_number = @i_POKEY
AND pd_sku = @SKU
AND pd_type = @ShmtType
END
UPDATE PO_DETAIL
SET pd_lottable01 = @Lottable01
, pd_lottable02 = @Lottable02
, pd_lottable03 = @Lottable03
, pd_lottable04 = ''
, pd_lottable05 = @Date
, pd_putaway_zone = @PutawayZone
, pd_pdt = @PDT
, pd_status = @VerifiedStatus
WHERE pd_asn_number = @i_SHIPMENT_ID
AND pd_po_number = @i_POKEY
AND pd_sku = @SKU
AND pd_type = @ShmtType
UPDATE PO_DETAIL01
SET lpd_status = @VerifiedStatus
WHERE lpd_shipment_id = @i_SHIPMENT_ID
AND lpd_po_number = @i_POKEY
AND lpd_customer_id = @i_CUSTOMER_ID
AND lpd_status = @AvailableStatus
IF @debug = 1
BEGIN
SELECT @ShipmentSKUCount AS SKUCOUNT
, @ShipmentSKUCountCur AS SKUCOUNTCUR
, @SKU AS SKU
, @ShipmentID AS SHIPMENT
, @POKey AS POKEY
END
SET @ShipmentSKUCountCur = @ShipmentSKUCountCur + 1
END
CLOSE Verify_Shipment_Cur
DEALLOCATE Verify_Shipment_Cur
答案 0 :(得分:1)
我看起来不错,但我显然没有你的数据来帮助。我是否可以建议在光标的各个部分放置一些打印语句。这样你就可以看到代码实际上是如何流动的。它没有帮助,但这就是我会做的。
答案 1 :(得分:0)
请问,您是否可以尝试定义两个变量:set @ShipmentSKUCount=[initial value]
,set @ShipmentSKUCountCur=[initial or constant value]
,并看看会发生什么?
另外,我发现没有检查@@FETCH_STATUS
。它也可能导致两次或更多次读取同一行
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