SQL SERVER 字符拆分列為多行

注：先學習sql server里的遞歸CTE。

假設有興趣表Hobbys

Name	Hobby
小張	籃球，足球，羽毛球

 

 

 

Name	Hobby
小張	籃球
小張	足球
小張	羽毛球

 

 

 

 

 

采用【遞歸cte】

with tempHobbys as (select Name,Hobby,charindex(',',Hobby)-1 endindex,0 startindex from Hobbys 
union all 
select Name,Hobby,charindex(',',Hobby,endindex+2)-1 endindex,endindex+2 startindex from tempHobbys where endindex>-1),
with tempHobbys 2 as (select Name,Hobby,(case when endindex<0 then len(Hobby) else Hobby end) endindex,startindex from tempHobbys)
select Name,substring(Hobby,startindex,endindex-startindex+1) Hobby from tempHobbys2