SQL 比较列值不排除过滤器中的相等值

Question

SELECT 
    DISTINCT
    isnull(dbo.fnRemovePatternFromString(p.Last_Name, '%[,-.'']%'), '')  as [Last]
    ,isnull(dbo.fnRemovePatternFromString(p.First_Name, '%[,-.'']%'), '') as [First]
    ,isnull(upper(fm.ANS_TEXT), '') as [Faculty]
    ,isnull(upper((select fs.ANS_TEXT from dbo.ADD_ANSW fs where fs.ID = p.id and ques_id = 3)),'') as [Billing]

FROM person p
inner JOIN person_facilities pf ON p.ID = pf.ID
LEFT JOIN usr_FacultyMember fm ON p.ID = fm.id
LEFT JOIN dbo.ADD_ANSW fs ON p.ID = fs.id and QUES_ID = 3 or QUES_ID = 71

WHERE 
    pf.Current_status in ('Active')
    and  (UPPER(fm.ANS_TEXT) <> UPPER(fs.ANS_TEXT)); **this compare not working

我希望结果能够排除在 Faculty 和 Billing 列中具有相同值的结果。但结果仍然是这样的：

Last      First Faculty Billing
Skywalker Luke  NON-MFG NON-MFG

我在网上找不到关于此的任何信息。有什么想法为什么不排除那些都是非 MFG 的吗？看原文的话，一个是NON-Mfg，一个是NON-MFG，但是用大写的应该比较排除。

**更新：我在 <> not always being round trip, so it can't compare correctly... LOWER(x) != LOWER(UPPER(x)). It was suggested to use collate, so I'm trying to find a good example. I'm having trouble applying this example of collate.

上找到了一些信息

Answer 1

显然您的数据库区分大小写。要忽略这些列的区分大小写，请在每个列之后添加 COLLATE SQL_Latin1_General_CP1_CI_AS：

SELECT 
 DISTINCT
 isnull(dbo.fnRemovePatternFromString(p.Last_Name, '%[,-.'']%'), '')  as [Last]
,isnull(dbo.fnRemovePatternFromString(p.First_Name, '%[,-.'']%'), '') as [First]
,isnull(upper(fm.ANS_TEXT), '') as [Faculty]
,isnull(upper((select fs.ANS_TEXT from dbo.ADD_ANSW fs where fs.ID = p.id and ques_id = 3)),'') as [Billing]

FROM person p
 inner JOIN person_facilities pf ON p.ID = pf.ID
 LEFT JOIN usr_FacultyMember fm ON p.ID = fm.id
 LEFT JOIN dbo.ADD_ANSW fs ON p.ID = fs.id and QUES_ID = 3 or QUES_ID = 71

WHERE 
 pf.Current_status in ('Active')
 and fm.ANS_TEXT COLLATE SQL_Latin1_General_CP1_CI_AS  <> fs.ANS_TEXT COLLATE SQL_Latin1_General_CP1_CI_AS;

Answer 2

决定在 crystal 报告中使用视图处理比较，而不是直接在 sql 表达式中处理视图。

Collate 没有像其他答案中建议的那样工作，并且正如所讨论的那样，<> 没有工作，并且 != 在 upper(x) 比较中没有工作。

SQL 比较列值不排除过滤器中的相等值

SQL Comparison of column values not excluding equal values from filter

sql

sql-server

equals

uppercase