Question

我正在准备一个新的数据库服务器，我将从一个大的，现有的多语言数据库（主要是英语/法语/西班牙语文本，很少来自其他语言的特殊字符，例如城市名称）迁移数据。我的问题是：它应该是口音敏感吗？如果搜索在咖啡馆和咖啡馆之间没有区别，用户会很高兴。但作为一名DBA，我很担心：我从未见过一个数据库至少偶尔会遇到一次糟糕的字符转换。如果我选择重音不敏感，我将如何查询数据库并询问“给我所有标题包含特殊字符的书籍”？如果我有办法做到这一点，我会很乐意去解除口音。

Answer 1

这应该取决于您的一般用法。

这并不排除您为特定查询更改

例如

declare @t1 table (word nvarchar(50) collate Latin1_General_CI_AI)
declare @t2 table (word nvarchar(50) collate Latin1_General_CI_AS)

insert @t1 values ('cafe'),('restaurant'), ('café')
insert @t2 select * from @t1

select * from @t1 where word like 'cafe' 
select * from @t1 where word like 'cafe' collate Latin1_General_CI_AS
select * from @t1 where word like 'café' 
select * from @t1 where word like 'café' collate Latin1_General_CI_AS

select * from @t2 where word like 'cafe' 
select * from @t2 where word like 'cafe' collate Latin1_General_CI_AI
select * from @t2 where word like 'café' 
select * from @t2 where word like 'café' collate Latin1_General_CI_AI

Answer 2

You can change collation at select time:

with t as (
select 'ali' as w union
select 'àli' as w
) 
select *
into #t
from t;

select * from #t
where w  collate Latin1_General_CS_AS_KS_WS like '%à%'

w   
--- 
àli 


select * from #t
where w  collate Traditional_Spanish_ci_ai like '%à%'

w   
--- 
ali 
àli

新数据库：它应该是重音敏感吗？

2 个答案: