SQL Server如何比较2个表以提取差异[重复]

Question

在过去 6 个月中，我们一直在错误地插入交易付款。 我们需要插入细分的付款，但在某些情况下，我们一直在插入对它们进行汇总的付款。

如何错误地插入一些付款：

同一笔交易应如何插入付款：

到目前为止，我为识别不正确的付款所做的是运行不正确的查询并检索从 2019 年 12 月 1 日开始的所有记录，然后保存这些记录临时表中的记录。

使用不正确的表查询：

SELECT DISTINCT
    CAST(P.ExternalId AS CHAR(25)) AS 'transID'
,   CASE RTP.Activity 
        WHEN 0 THEN 'Payment' 
        WHEN 1 THEN 'Void' 
    END AS 'transType'
,   P.TransactionCreateDate AS 'createdDate'
,   P.Amount AS 'paymentAmount'             <<< Payment column was being retrieved from wrong table.
,   P.EffectiveDate AS 'paymentDate'
,   CAST(P.Id AS NVARCHAR(50)) AS 'payment_Id'
,   P.TransactionBatchId AS 'batchId'
,   T.TenderTypeId AS 'TenderType'
,   CAST(TType.Name AS CHAR(10)) AS 'PaymentType'
FROM 
    Payments P
INNER JOIN dbo.Tenders T
    ON T.TransactionId = P.TransactionId
INNER JOIN dbo.TenderTypes TType
    ON TType.Id = T.TenderTypeId
WHERE 
    CAST(P.TransactionCreateDate AS DATE) >= '12/01/2019'
ORDER BY 
    createdDate DESC

然后我对查询进行更正，以检索从 2019 年 12 月 1 日开始但这次获得细分付款的所有交易，并将它们放入第二个临时表中。差异是 955 条记录。

使用正确的表格查询支付金额：

SELECT DISTINCT
    CAST(P.ExternalId AS CHAR(25)) AS 'transID'
,   CASE RTP.Activity 
        WHEN 0 THEN 'Payment' 
        WHEN 1 THEN 'Void' 
    END AS 'transType'
,   P.TransactionCreateDate AS 'createdDate'
,   T.Amount AS 'paymentAmount'
,   P.EffectiveDate AS 'paymentDate'
,   CAST(P.Id AS NVARCHAR(50)) AS 'payment_Id'
,   P.TransactionBatchId AS 'batchId'
,   T.TenderTypeId AS 'TenderType'
,   CAST(TType.Name AS CHAR(10)) AS 'PaymentType'
FROM 
    Payments P
INNER JOIN dbo.Tenders T
    ON T.TransactionId = P.TransactionId
INNER JOIN dbo.TenderTypes TType
    ON TType.Id = T.TenderTypeId
WHERE 
    CAST(P.TransactionCreateDate AS DATE) >= '12/01/2019'
ORDER BY 
    createdDate DESC

我的问题是我现在如何比较每个表的内容，以提取需要更正的内容？我相信这并不难，我只是不知所措，无法弄清楚，想知道是否有人可以提供帮助。

非常感谢。

Answer 1

EXCEPT 操作员会解决您的问题吗？

SELECT A.a, A.b, ... 
FROM Table A  
EXCEPT  
SELECT B.a, B.b, ... 
FROM Table B;  

文档在这里：https://docs.microsoft.com/en-us/sql/t-sql/language-elements/set-operators-except-and-intersect-transact-sql?view=sql-server-ver15