摘要: 下文将分享两种将字段中null值替换为指定值的方法分享,如下所示: 实验环境:sqlserver 2008 R2
例:
create table test(keyId int identity, info varchar(30))
go
insert into test(info)values('a'),('b'),(null),('d')
go
---方法1:使用isnull替换
select keyId,isnull(info,'替换null值') as info from test
go
---方法2:使用case when 替换
select keyId,case when info is null then '替换null值' else info end as info from test
---方法3:使用coalesce替换相应的值
select keyId , coalesce(info,'替换null值') as info from test go
truncate table test
drop table test