sql - 如何进行区分大小写的 GROUP BY？

Question

如果我执行下面的代码:

with temp as
(
  select 'Test' as name
  UNION ALL
  select 'TEST'
  UNION ALL
  select 'test'
  UNION ALL
  select 'tester'
  UNION ALL
  select 'tester'
)
SELECT name, COUNT(name)
FROM temp
group by name

它返回结果:

TEST   3
tester 2

有没有办法让分组区分大小写，以便结果为:

Test   1
TEST   1
test   1
tester 2

Answer 1

您需要将文本转换为二进制(或使用区分大小写的排序规则)。

With temp as
(
  select 'Test' as name
  UNION ALL
  select 'TEST'
  UNION ALL
  select 'test'
  UNION ALL
  select 'tester'
  UNION ALL
  select 'tester'
)
Select Name, COUNT(name)
From temp
Group By Name, Cast(name As varbinary(100))

使用排序规则:

Select Name Collate SQL_Latin1_General_CP1_CS_AS, COUNT(name)
From temp
Group By Name Collate SQL_Latin1_General_CP1_CS_AS