Question

我有两个sql语句： SQL 1：

SELECT
[PO].[No.],
[PO].[SD],
[PO].[oNo.],
[PO].[StCN],
[POL].[OC] as S_text
FROM [PO]
  INNER JOIN 
  [POL]
  ON [POL].[No.] = [PO].[No.]
    INNER JOIN ( 
      SELECT [POL].[No.], 
      MAX([POL].[Line No.])as MaxLine
      FROM [POL]
      WHERE [POL].[EP]='1'
      GROUP BY [POL].[No.] 
      ) as MaxLineTable
      ON [POL].[No.] = MaxLineTable.[No.]
    AND [POL].[Line No.] = MaxLineTable.MaxLine
  WHERE [PO].[Status] <> 3
  AND [PO].[Plant] = '0025'
  ORDER BY [PO].[SD]

SQL语句的结果：

NO.  |  SD    |  oNo  |  StCN  |  S_text
P001 | 1/1/16 | O100  |  CustA | Step 2
P002 | 2/1/16 | O100  |  CustA | Step 59
P006 | 9/1/16 | O103  |  CustC | Step 10
P005 | 1/2/16 | O101  |  CustB | Step 4

和SQL 2：

SELECT
[PO].[No.],
[PO].[SD],
[PO].[oNo.],
[PO].[StCN],
"Some Tekst" as S_text
FROM [PO]
WHERE [PO].[Status] <> 3
AND [PO].[Plant] = '0025' 
ORDER BY [PO].[SD]

SQL语句的结果：

NO.  |  SD    |  oNo  |  StCN  |  S_text
P001 | 1/1/16 | O100  |  CustA | Some Text
P003 | 1/1/16 | O104  |  CustC | Some Text
P002 | 2/1/16 | O100  |  CustA | Some Text
P006 | 9/1/16 | O103  |  CustC | Some Text
P005 | 1/2/16 | O101  |  CustB | Some Text
P004 | 6/2/16 | O207  |  CustA | Some Text

SQL 1始终是sql2的子集。我想要的是sql 2的结果，所有行中都有S_text的附加信息。

我想要的输出：

NO.  |  SD    |  oNo  |  StCN  |  S_text
P001 | 1/1/16 | O100  |  CustA | Step 2
P003 | 1/1/16 | O104  |  CustC | Some Text
P002 | 2/1/16 | O100  |  CustA | Step 59
P006 | 9/1/16 | O103  |  CustC | Step 10
P005 | 1/2/16 | O101  |  CustB | Step 4
P004 | 6/2/16 | O207  |  CustA | Some Text

Answer 1

可以是两个选择

之间的左连接

select No, SD, oNo, StCN, ISNULL(t2.S_text, "Some Tekst" )
FROM  (
  SELECT
    [PO].[No.] as No,
    [PO].[SD] as SD ,
    [PO].[oNo.] as oNo,
    [PO].[StCN] as StCN   
    FROM [PO]
    WHERE [PO].[Status] <> 3
    AND [PO].[Plant] = '0025' 
) t1 
left  join (
  SELECT
    [PO].[No.] as No,
    [PO].[SD] as SD ,
    [PO].[oNo.] as oNo,
    [PO].[StCN] as StCN   
    [POL].[OC] as S_text
    FROM [PO]
    INNER JOIN 
    [POL]
      ON [POL].[No.] = [PO].[No.]
    INNER JOIN ( 
      SELECT [POL].[No.], 
      MAX([POL].[Line No.])as MaxLine
      FROM [POL]
      WHERE [POL].[EP]='1'
      GROUP BY [POL].[No.] 
    ) as MaxLineTable
       ON [POL].[No.] = MaxLineTable.[No.]
          AND [POL].[Line No.] = MaxLineTable.MaxLine
    WHERE [PO].[Status] <> 3
    AND [PO].[Plant] = '0025'
) t2
left  join 
ORDER BY t1.[SD]

合并2个sql语句

1 个答案: