Question

由于我缺乏SQL知识并且需要帮助，因此我不知道如何获得正确的结果。

我了解ORDER BY命令的作用；我只是不知道如何处理查询返回的数据，以使数据保持在我需要的顺序。

下面是SQL字符串：

SELECT cfcif# AS "CIF Number",cfna1 AS "Customer Name" FROM cncttp08.jhadat842.cfmast cfmast WHERE cfcif#='T000714'
UNION
SELECT cfcif# AS "CIF Number",cfna1 AS "Customer Name" FROM cncttp08.jhadat842.cfmast cfmast WHERE cfcif#='T000713'
UNION
SELECT cfcif# AS "CIF Number",cfna1 AS "Customer Name" FROM cncttp08.jhadat842.cfmast cfmast WHERE cfcif#='T000715'
ORDER BY "CIF Number"

如您所见，“ CIF编号”是乱序的，这是它们的处理方式，并且使用ORDER BY数据是按CIF＃排序的，但是我实际上需要使数据乱序

以下是当前字符串如何返回数据：

T000713 | ROGER RABBITT                          
T000714 | JESSICA RABBIT                         
T000715 | JAMES KIRK

以下是我需要返回的数据的方式：

T000714 | JESSICA RABBITT
T000713 | ROGER RABBITT
T000715 | JAMES KIRK

当我删除ORDER BY时，返回的结果是：

T000714 | JAMES KIRK
T000713 | JESSICA RABBITT
T000715 | ROGER RABBITT

Answer 1

我不明白您为什么使用UNION。您可以这样做：

SELECT 
  cfcif# AS "CIF Number",
  cfna1 AS "Customer Name" 
  FROM cncttp08.jhadat842.cfmast cfmast 
  WHERE cfcif# IN ('T000714', 'T000713', 'T000715')
ORDER BY
  CASE cfcif# 
    WHEN 'T000714' THEN 1
    WHEN 'T000713' THEN 2
    WHEN 'T000715' THEN 3
  END

Answer 2

简单！

从order by子句中删除引号。它应该工作。您的代码应如下所示。

`SELECT cfcif# AS "CIF Number",cfna1 AS "Customer Name" FROM 
 cncttp08.jhadat842.cfmast cfmast WHERE cfcif#='T000714'
 UNION
 SELECT cfcif# AS "CIF Number",cfna1 AS "Customer Name" FROM 
 cncttp08.jhadat842.cfmast cfmast WHERE cfcif#='T000713'
 UNION
 SELECT cfcif# AS "CIF Number",cfna1 AS "Customer Name" FROM 
 cncttp08.jhadat842.cfmast cfmast WHERE cfcif#='T000715'
 ORDER BY CIF Number`

意外结果SQL ORDER BY

2 个答案: