如何将多列值连接为单个值 [英] How to Concatenate the Multiple Columns value to Single value

问题描述

在我的数据库中，有七个列，分别为值"Y"和"N".我想取值为"Y"的列标题"，并用逗号将其连接起来.谁能帮我解决这个问题.我的要求是这样的:


列标题:TE HE FE RE YE WE DS
列值:Y N N Y N Y Y
N N N N Y N N


OutPut应该是这样的:


第一行:TE，RE，WE，DS
第二排:YE


在Advance中致谢

Hi,

In my database there are seven columns with the value "Y" and "N". I want to take the "Column Heading" Which the values are "Y" and I want to Concatenate it with Comma. Can any one help me to solve this problem. My requirement is like this:


Column Header: TE HE FE RE YE WE DS
Column Values: Y N N Y N Y Y
N N N N Y N N


OutPut Should be Like this:


for First Row: TE,RE,WE,DS
for Second Row: YE


Thanks in Advance

推荐答案

我会做这样的事情:

I would do something like this:

select case 
       when len([ekeke]) > 0 then (left([ekeke], len(ekeke) - 1)) 
       else [ekeke] 
       end /* case */ as 'ekeke'
from 
(
    select 
        case when [TE]='Y' then 'te,' else '' end + 
        case when [HE]='Y' then 'he,' else '' end + 
        case when [FE]='Y' then 'fe,' else '' end + 
        case when [RE]='Y' then 're,' else '' end + 
        -- ... more lines here ...
        case when [DS]='Y' then 'ds,' else '' end 
        as 'ekeke'
) v

希望这会有所帮助，
巴勃罗.

Hope this helps,
Pablo.

Select TE +'',''+RE+'',''+WE+'',''+DS from your_table
union 
SElect YE from your_table 

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