合并三个查询的结果并在另一个查询中使用它们

Question

我想用这三个查询：

第一个查询：

SELECT 
    AMICOS.PNRREG.PN, Max(AMICOS.HISTORYSTOCKFLOAT.HISTORYDATE) AS lastissue 
FROM 
    AMICOS.HISTORYSTOCKFLOAT 
INNER JOIN 
    AMICOS.PNRREG ON AMICOS.HISTORYSTOCKFLOAT.PARTID = AMICOS.PNRREG.PARTID 
WHERE 
    (((AMICOS.HISTORYSTOCKFLOAT.ACTION)='ISSUE') AND    
    ((AMICOS.HISTORYSTOCKFLOAT.HISTORYDATE)<to_date('31032019','DDMMYYYY')+1)) 
GROUP BY 
    AMICOS.PNRREG.PN;

第二次查询：

SELECT 
    AMICOS.PNRREG.PN, Max(AMICOS.HISTORY.HISTORYDATE) AS lastissuehistory
FROM
    AMICOS.HISTORY 
INNER JOIN 
    AMICOS.PNRREG ON AMICOS.HISTORY.PARTID = AMICOS.PNRREG.PARTID
WHERE 
   (((AMICOS.HISTORY.HISTORYACTION)='ISSUE') AND 
    ((AMICOS.HISTORY.HISTORYDATE)<to_date('31032019','DDMMYYYY')+1))
GROUP BY 
    AMICOS.PNRREG.PN;

第三次查询：

SELECT 
    AMICOS.PNRREG.PN, Max(AMICOS.HISTORYSTOCKFLOAT.HISTORYDATE) AS lastpurchase
FROM
    AMICOS.HISTORYSTOCKFLOAT 
INNER JOIN 
    AMICOS.PNRREG ON AMICOS.HISTORYSTOCKFLOAT.PARTID = AMICOS.PNRREG.PARTID
WHERE 
    (((AMICOS.HISTORYSTOCKFLOAT.HISTORYDATE)<to_date('31032019','DDMMYYYY')+1))
GROUP BY 
    AMICOS.PNRREG.PN, AMICOS.HISTORYSTOCKFLOAT.ACTION
HAVING 
    (((AMICOS.HISTORYSTOCKFLOAT.ACTION)='PURCHASE'));

最后一个查询将它们放在一起：

SELECT AMICOS.PNRREG.PN, AMICOS.IRCABCCAT.ABC_CATEGORY, AMICOS.IRC.PRIMUTILISATION, AMICOS.PNRREG.DESCRIPTION, AMICOS.HISTORYSTOCKFLOAT.ACCOUNTNO, AMICOS.HISTORYSTOCKFLOAT.HISTORYDATE, AMICOS.HISTORYSTOCKFLOAT.STOCK_FLOAT, AMICOS.HISTORYSTOCKFLOAT.STOCK_PRICE, AMICOS.HISTORYSTOCKFLOAT.STOCKVALUE, lastpurchase.lastpurchase, lastissue.lastissue, lastissuehistory.lastissuehistory
FROM ((AMICOS.PNRREG LEFT JOIN lastissuehistory ON AMICOS.PNRREG.PN = lastissuehistory.PN LEFT JOIN lastissue ON AMICOS.PNRREG.PN = lastissue.PN) 
LEFT JOIN lastpurchase ON AMICOS.PNRREG.PN = lastpurchase.PN);

我尝试了 UNION, JOIN 将这些查询放在一起，以从最后一个查询中获得一个结果，该结果依赖于其他三个查询。

当我预定义了前三个查询的查询时，它可以在 MS Access 上运行。但它不适用于 Oracle SQL Developer 查询工具。

我怎样才能做到这一点？

Answer 1

看起来像 CTE（通用表表达式，即 WITH 因式分解子句）可能会有所帮助。像这样的：

with 
  first  as (select pn, ... from ...),
  second as (select pn, ... from ...),
  third  as (select pn, ... from ...)
-- now, join them
select f.pn, s.some_column, t.some_other_column
from first f join second s on s.pn = f.pn
join third t on t.pn = f.pn

Answer 2

您可以使用 With 或以下选项

SELECT 
    AMICOS.PNRREG.PN, 
    AMICOS.IRCABCCAT.ABC_CATEGORY, 
    AMICOS.IRC.PRIMUTILISATION, 
    AMICOS.PNRREG.DESCRIPTION, 
    AMICOS.HISTORYSTOCKFLOAT.ACCOUNTNO, 
    AMICOS.HISTORYSTOCKFLOAT.HISTORYDATE, 
    AMICOS.HISTORYSTOCKFLOAT.STOCK_FLOAT, 
    AMICOS.HISTORYSTOCKFLOAT.STOCK_PRICE, 
    AMICOS.HISTORYSTOCKFLOAT.STOCKVALUE, 
    lastpurchase.lastpurchase, 
    lastissue.lastissue, 
    lastissuehistory.lastissuehistory
FROM 
    AMICOS.PNRREG

LEFT JOIN (SELECT 
AMICOS.PNRREG.PN, 
Max(AMICOS.HISTORY.HISTORYDATE) AS lastissuehistory
FROM 
    AMICOS.HISTORY 
    INNER JOIN AMICOS.PNRREG ON AMICOS.HISTORY.PARTID = AMICOS.PNRREG.PARTID
WHERE (((AMICOS.HISTORY.HISTORYACTION)='ISSUE') AND ((AMICOS.HISTORY.HISTORYDATE)<to_date('31032019','DDMMYYYY')+1))
GROUP BY AMICOS.PNRREG.PN) lastissuehistory ON AMICOS.PNRREG.PN = lastissuehistory.PN 

LEFT JOIN (SELECT 
AMICOS.PNRREG.PN, 
Max(AMICOS.HISTORYSTOCKFLOAT.HISTORYDATE) AS lastissue 
FROM 
    AMICOS.HISTORYSTOCKFLOAT 
    INNER JOIN AMICOS.PNRREG ON AMICOS.HISTORYSTOCKFLOAT.PARTID = AMICOS.PNRREG.PARTID 
WHERE 
(((AMICOS.HISTORYSTOCKFLOAT.ACTION)='ISSUE') AND ((AMICOS.HISTORYSTOCKFLOAT.HISTORYDATE)<to_date('31032019','DDMMYYYY')+1)) 
GROUP BY AMICOS.PNRREG.PN)lastissue ON AMICOS.PNRREG.PN = lastissue.PN

LEFT JOIN (SELECT 
    AMICOS.PNRREG.PN, 
    Max(AMICOS.HISTORYSTOCKFLOAT.HISTORYDATE) AS lastpurchase
FROM 
    AMICOS.HISTORYSTOCKFLOAT 
    INNER JOIN AMICOS.PNRREG ON AMICOS.HISTORYSTOCKFLOAT.PARTID = AMICOS.PNRREG.PARTID
WHERE (((AMICOS.HISTORYSTOCKFLOAT.HISTORYDATE)<to_date('31032019','DDMMYYYY')+1))
GROUP BY AMICOS.PNRREG.PN, AMICOS.HISTORYSTOCKFLOAT.ACTION
HAVING (((AMICOS.HISTORYSTOCKFLOAT.ACTION)='PURCHASE'))) lastpurchase ON AMICOS.PNRREG.PN = lastpurchase.PN

Answer 3

@Littlefoot 我试过这样的事情：

WITH
first as (SELECT AMICOS.PNRREG.PN, Max(AMICOS.HISTORYSTOCKFLOAT.HISTORYDATE) AS lastissue FROM AMICOS.HISTORYSTOCKFLOAT INNER JOIN AMICOS.PNRREG ON                   AMICOS.HISTORYSTOCKFLOAT.PARTID = AMICOS.PNRREG.PARTID WHERE (((AMICOS.HISTORYSTOCKFLOAT.ACTION)='ISSUE') AND                                           ((AMICOS.HISTORYSTOCKFLOAT.HISTORYDATE)<to_date('31032019','DDMMYYYY')+1)) GROUP BY AMICOS.PNRREG.PN),
second as (SELECT AMICOS.PNRREG.PN, Max(AMICOS.HISTORY.HISTORYDATE) AS lastissuehistory
       FROM AMICOS.HISTORY INNER JOIN AMICOS.PNRREG ON AMICOS.HISTORY.PARTID = AMICOS.PNRREG.PARTID
       WHERE (((AMICOS.HISTORY.HISTORYACTION)='ISSUE') AND ((AMICOS.HISTORY.HISTORYDATE)<to_date('31032019','DDMMYYYY')+1))
       GROUP BY AMICOS.PNRREG.PN),
third as (SELECT AMICOS.PNRREG.PN, Max(AMICOS.HISTORYSTOCKFLOAT.HISTORYDATE) AS lastpurchase
FROM AMICOS.HISTORYSTOCKFLOAT INNER JOIN AMICOS.PNRREG ON AMICOS.HISTORYSTOCKFLOAT.PARTID = AMICOS.PNRREG.PARTID
WHERE (((AMICOS.HISTORYSTOCKFLOAT.HISTORYDATE)<to_date('31032019','DDMMYYYY')+1))
GROUP BY AMICOS.PNRREG.PN, AMICOS.HISTORYSTOCKFLOAT.ACTION
HAVING (((AMICOS.HISTORYSTOCKFLOAT.ACTION)='PURCHASE')))
SELECT AMICOS.PNRREG.PN, AMICOS.IRCABCCAT.ABC_CATEGORY, AMICOS.IRC.PRIMUTILISATION,
AMICOS.PNRREG.DESCRIPTION, AMICOS.HISTORYSTOCKFLOAT.ACCOUNTNO,
AMICOS.HISTORYSTOCKFLOAT.HISTORYDATE, AMICOS.HISTORYSTOCKFLOAT.STOCK_FLOAT,
AMICOS.HISTORYSTOCKFLOAT.STOCK_PRICE, AMICOS.HISTORYSTOCKFLOAT.STOCKVALUE,
lastpurchase.lastpurchase, lastissue.lastissue, lastissuehistory.lastissuehistory
FROM ((AMICOS.PNRREG LEFT JOIN lastpurchase ON AMICOS.PNRREG.PN = lastpurchase.PN
LEFT JOIN lastissue ON AMICOS.PNRREG.PN = lastissue.PN) LEFT JOIN lastissuehistory ON
AMICOS.PNRREG.PN = lastissuehistory.PN;

但它一直告诉我“选择列表与 GROUP BY 不一致；将 GROUP BY 子句修改为：AMICOS.PNRREG.PN, AMICOS.HISTORYSTOCKFLOAT.ACTION, Max(AMICOS.HISTORYSTOCKFLOAT.HISTORYDATE)”

问候 厄尼拉克

Answer 4

在本指南的帮助下，我设法完成了这项工作：Use lookupset function in SSRS

Katherine Xiong 的一个建议。

问候

厄尼拉克