Tsql 调整sql的开始和结束日期
给定MS SQL Server 2016中的数据集Tsql 调整sql的开始和结束日期,tsql,Tsql,给定MS SQL Server 2016中的数据集 StoreID PurchaseID ShopID LocationID Starttime Endtime 1020 20200102 9856 0010 2020-01-08 09:08:53 2020-01-08 09:11:52 1021 20200102 9856 0020 2020-01-08 09:09:48 2020-01-08 09:11:52 这里StoreID
StoreID PurchaseID ShopID LocationID Starttime Endtime
1020 20200102 9856 0010 2020-01-08 09:08:53 2020-01-08 09:11:52
1021 20200102 9856 0020 2020-01-08 09:09:48 2020-01-08 09:11:52
这里StoreID是主键。我正在寻找一个将第一条记录结束时间的值更改为下一条记录开始时间中存在的值的查询。准确地说,我需要查找PurchaseID和shopkeeperID组合在同一天发生的记录,其中位置id对于两者都不同,然后获取后面记录的开始时间,并更新前一行endtime中的值
注意:这里我只给出了两个样本大小,但在我的数据集中,我有两个以上的场景
我的结果集应该是:
StoreID PurchaseID ShopkID LocationID Starttime Endtime
1020 20200102 9856 0010 2020-01-08 09:08:53 2020-01-08 09:09:48
1021 20200102 9856 0020 2020-01-08 09:09:48 2020-01-08 09:11:52
一种方法与此类似,尽管子选择的执行效果不如设置SQL:
UPDATE
T
SET
T.purchaseendtime =
(
SELECT TOP 1
purchasestarttime
FROM
TABLE_NAME T2
WHERE
T2.PurchaseStartTime > T.PurchaseStartTime
AND T2.PurchaseID = T.PurchaseID
AND T2.ShopkeeperID = T.ShopkeeperID
AND T2.LocationID <> T.LocationID
AND Convert(date, T2.PurchaseStartTime) = Convert(date, T.PurchaseStartTime)
ORDER BY
T2.PurchaseStarttime
)
FROM
TABLE_NAME T
一种方法与此类似,尽管子选择的执行效果不如设置SQL:
UPDATE
T
SET
T.purchaseendtime =
(
SELECT TOP 1
purchasestarttime
FROM
TABLE_NAME T2
WHERE
T2.PurchaseStartTime > T.PurchaseStartTime
AND T2.PurchaseID = T.PurchaseID
AND T2.ShopkeeperID = T.ShopkeeperID
AND T2.LocationID <> T.LocationID
AND Convert(date, T2.PurchaseStartTime) = Convert(date, T.PurchaseStartTime)
ORDER BY
T2.PurchaseStarttime
)
FROM
TABLE_NAME T
此逻辑返回值。此语句不返回值。它使用一个子选择来获取值。您试过了吗?此逻辑返回值。此语句不返回值。它使用一个子选择来获取值。你试过了吗?OP承认他们在中复制了问题。OP承认他们在中复制了问题。