SQL 区分大小写分组依据

Question

简介

我有一个 table，它有一个列 "AccountCode" 和其他列。很少有相同但区分大小写的帐户代码。示例：

AccountCode   OrderId
ABC           O001
ABC           O002
abc           O003
DEF           O004

Objective

我希望查询在 AccountCode 列上有一个分组并获得相应的计数。预期输出应该像

ABC      2
abc      1
DEF      1

我尝试过使用 COLLATE Latin1_General_CS_AS 但无法获得所需的结果。

以下查询不提供区分大小写的输出

select accountCode COLLATE Latin1_General_CS_AS, count(OrderId) 
from <<TableName>> 
group by accountCode

Answer 1

也在 GROUP BY 子句上分配 COLLATE

select accountCode COLLATE Latin1_General_CS_AS, count(OrderId)  
from <<TableName>>  
group by accountCode COLLATE Latin1_General_CS_AS

Answer 2

create table #a
(
AccountCode varchar(10)  , OrderId varchar(10)
)
insert into #a values
('ABC','O001'),
('ABC','O002'),
('abc','O003'),
('DEF','O004')

select accountCode COLLATE Latin1_General_CS_AS, count(OrderId) from #a group by accountCode COLLATE Latin1_General_CS_AS

Answer 3

开始翻译创建 TABLE #Temp(AccountCode VARCHAR(100),OrderId VARCHAR(100))

插入#Temp(AccountCode,OrderId) SELECT 'ABC','O001' 联合所有 SELECT 'ABC','O002' 联合所有 SELECT 'abc','O003' 联合所有 SELECT 'DEF','O004'

SELECT AccountCode 整理 Latin1_General_CS_AS, COUNT(OrderId) FROM #Temp GROUP BY accountCode 整理 Latin1_General_CS_AS

回滚传输

SQL 区分大小写分组依据

SQL Case Sensitive Group By

sql

sql-server

collation

简介

Objective