sql server乱码显示问题

【1】问题

直接查询表,表中的字段是乱码,不管用UTF8、还是用 GBK,这些就是不显示,什么垃圾特殊字符写着里面

  

 

 

发现其这个 customerid 在sql server客户端显示是一串空白,但是在程序段显示是乱码

在ssms中,我们是可以这么关联的,你看我贴出来都有错误,但在ssms中,是一串空白

select *,cast(customerid as varbinary) from PTCustomer WITH(NOLOCK) WHERE customerid='      '
select * from customer with(nolock) where customerid = '      '

  

 

 

 直接关联:也是可以的

select * from customer with(nolock) where customerid =
(select customerid from PTCustomer WITH(NOLOCK) WHERE ptid = 'nbbf5110006')

 

 

【2】解决:特殊字符转成二进制后

干脆已二进制的方法提取出来;

然后用二进制做匹配

select *,cast(customerid as varbinary) from PTCustomer WITH(NOLOCK) WHERE ptid = 'nbbf5110006'
select * from customer with(nolock) where cast(CUSTOMERID as char)=cast(0xA7F3A6FB as char)

 有人要问了,为什么不直接用二进制匹配,还要  特地转成字符串?

where cast(CUSTOMERID as char)=cast(0xA7F3A6FB as char)

因为我发现他们两个转完之后,不一样啊!如下图,所以才转成字符串的

  

 

posted @ 2021-01-14 17:45  郭大侠1  阅读(1144)  评论(0编辑  收藏  举报