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【MySQL】MySQL的group_concat使用例子

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> 参考的优秀文章

GROUP_CONCAT(expr)

 

> 简单的例子

此函数的功能,是拼接group分组多行的数据为一行,并可以指定去重、排序、分隔符。

 

例子:

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select t.name, group_concat(distinct t.role order by t.sort asc separator ;) from 
(
select Nick as name, coder as role, 1 as sort
union all
select Nick as name, admin as role, 3 as sort
union all
select Nick as name, admin as role, 2 as sort
union all
select Viki as name, coder as role, 1 as sort
union all
select Viki as name, admin as role, 2 as sort
union all
select Viki as name, player as role, 3 as sort
union all
select Darren as name, admin as role, 2 as sort
union all
select Darren as name, player as role, 1 as sort
) t 
group by t.name;
View Code

 

结果:

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【MySQL】MySQL的group_concat使用例子

原文:http://www.cnblogs.com/nick-huang/p/5131664.html

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