SQL - 解析字符串

Question

我有一张包含以下内容的表：

ID     Names 
1      Aaron, Betsy, Cindy 
2      Dillon, Eric, Fred 

我想解析名称列并让它返回：

ID   Names 
1    Aaraon 
1    Betsy 
1    Cindy 
2    Dillon 

我在网上发现了几个解析名称列的函数但没有将ID绑定到它。

Answer 1

这样的事情怎么样：

;with cte (id, name, names) as
(
  select id,
    cast(left(names, charindex(',',names+',')-1) as varchar(50)) name,
         stuff(names, 1, charindex(',',names+','), '') names
  from yourtable
  union all
  select id,
    cast(left(names, charindex(',',names+',')-1) as varchar(50)) name,
    stuff(names, 1, charindex(',',names+','), '') names
  from cte
  where names > ''
) 
select id, name
from cte
order by id

请参阅SQL Fiddle with Demo

返回结果：

| ID |   NAME |
---------------
|  1 |  Aaron |
|  1 |  Betsy |
|  1 |  Cindy |
|  2 | Dillon |
|  2 |   Eric |
|  2 |   Fred |