我想从2个表中选择匹配和不匹配的两行

Question

我已经写了这个查询来从期初余额表和gernalledger表中选择匹配和不匹配的两行，但是它只显示两个表中的匹配行，我想从openingbalance表中选择所有行，

SELECT   GL.AccountId,Ca.Code as Code,CA.AccountName as AccountName,
         SUM(CASE GL.DrCr WHEN 2 THEN ISNULL(Amount,0) END) AS Debit,
         SUM(CASE GL.DrCr WHEN 1 THEN ISNULL(Amount,0) END) AS Credit,
         SUM(CASE o.DrOrCr WHEN 2 THEN ISNULL(o.Balance,0) END) AS OpeningDebit,
         SUM(CASE o.DrOrCr WHEN 1 THEN ISNULL(o.Balance,0) END) AS OpeningCredit
FROM     GeneralLedgerLine GL 
Join ClientAccount CA On GL.AccountId = CA.Id
Left Join OpeningBalance o on o.AccountId=CA.Id
Where CA.ClientId = 1

GROUP BY GL.AccountId,CA.Code,CA.AccountName

`

Answer 1

您可以对三个表使用左联接，并在On子句（而不是Where子句）中移动CA.ClientId = 1

SELECT   GL.AccountId,Ca.Code as Code,CA.AccountName as AccountName,
         SUM(CASE GL.DrCr WHEN 2 THEN ISNULL(Amount,0) END) AS Debit,
         SUM(CASE GL.DrCr WHEN 1 THEN ISNULL(Amount,0) END) AS Credit,
         SUM(CASE o.DrOrCr WHEN 2 THEN ISNULL(o.Balance,0) END) AS OpeningDebit,
         SUM(CASE o.DrOrCr WHEN 1 THEN ISNULL(o.Balance,0) END) AS OpeningCredit
FROM     GeneralLedgerLine GL 
LEft Join ClientAccount CA On GL.AccountId = CA.Id
Left Join OpeningBalance o on o.AccountId=CA.Id
and CA.ClientId = 1

GROUP BY GL.AccountId,CA.Code,CA.AccountName

Answer 2

尝试一下：

Full Outer Join OpeningBalance o on o.AccountId=CA.Id

Answer 3

如果要从两个表中获取数据，请在下面的查询中使用FULL OUTER JOIN而不是LEFT JOIN，

还将o.AccountId上的OpeningBalance表与GeneralLedgerLine表中的GL.AccountId结合起来

SELECT   GL.AccountId,Ca.Code as Code,CA.AccountName as AccountName,
         SUM(CASE GL.DrCr WHEN 2 THEN ISNULL(Amount,0) END) AS Debit,
         SUM(CASE GL.DrCr WHEN 1 THEN ISNULL(Amount,0) END) AS Credit,
         SUM(CASE o.DrOrCr WHEN 2 THEN ISNULL(o.Balance,0) END) AS OpeningDebit,
         SUM(CASE o.DrOrCr WHEN 1 THEN ISNULL(o.Balance,0) END) AS OpeningCredit
FROM     GeneralLedgerLine GL 
Join ClientAccount CA On GL.AccountId = CA.Id
FULL OUTER Join OpeningBalance o on o.AccountId=GL.AccountId
Where CA.ClientId = 1

GROUP BY GL.AccountId,CA.Code,CA.AccountName

如果要从OpeningBalance表中选择所有行，而不是从GeneralLedgerLine表中选择所有行，则在查询中使用RIGHT OUTER JOIN而不是LEFT JOIN，

还将o.AccountId上的OpeningBalance表与GeneralLedgerLine表中的GL.AccountId结合起来

SELECT   GL.AccountId,Ca.Code as Code,CA.AccountName as AccountName,
         SUM(CASE GL.DrCr WHEN 2 THEN ISNULL(Amount,0) END) AS Debit,
         SUM(CASE GL.DrCr WHEN 1 THEN ISNULL(Amount,0) END) AS Credit,
         SUM(CASE o.DrOrCr WHEN 2 THEN ISNULL(o.Balance,0) END) AS OpeningDebit,
         SUM(CASE o.DrOrCr WHEN 1 THEN ISNULL(o.Balance,0) END) AS OpeningCredit
FROM     GeneralLedgerLine GL 
Join ClientAccount CA On GL.AccountId = CA.Id
RIGHT OUTER Join OpeningBalance o on o.AccountId=GL.AccountId
Where CA.ClientId = 1

GROUP BY GL.AccountId,CA.Code,CA.AccountName