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数据库默认查询是不区分大小写

作者:互联网

1. 例子:

 SELECT *
  FROM [NORTHWND].[dbo].[Customers]
  where CompanyName = 'alfreds futterkiste'

2. 运行结果如下:

 3.如何让查询区分大小写?(利用collate)

把上面的语句改为如下:

SELECT *
  FROM [NORTHWND].[dbo].[Customers]
  where CompanyName collate  Latin1_General_CS_AS = 'alfreds futterkiste'

 

4.我想把这一列改成区分大小写(case sensitive)

但会出错,错在哪里呢?要怎么修改呢?

alter table [NORTHWND].[dbo].[Customers]
  alter column CompanyName nvarchar(40) collate SQL_Latin1_General_CP1_CS_AS

 

 

 

5. 在EF中如何利用collate(好像只有在EF Core 5.0中引入)

https://docs.microsoft.com/en-us/ef/core/miscellaneous/collations-and-case-sensitivity#explicit-collation-in-a-query

 

标签:Customers,dbo,CompanyName,数据库,默认,大小写,collate,NORTHWND
来源: https://www.cnblogs.com/keeplearningandsharing/p/16576844.html