SQL将逗号分隔列转换为行并将其保存到另一个表中

Question

我有一个名为food的表，其中包含speciality列。行上的值：

Speciality (column name)
......................................

Chinese, south Indian, Mediterranean, American
......................................

South Indian, fast food, shakes, coldrinks, Chinese

......................................

我想在不同的行上作为唯一值，例如：

South Indian
Chinese
Mediterranean
American
Fast food
Shakes

并将其保存到列名为food2的另一个表speciality2，我想将这些值保存到该列中。

SQL Server 2008中的所有数据库。

Answer 1

我认为split函数和XML可以帮助你 尝试以下代码

Insert Into Food2(Speciality2)
SELECT   Distinct
     Split.a.value('.', 'VARCHAR(100)') AS String  
 FROM  (SELECT  
         CAST ('<M>' + REPLACE([Speciality], ',', '</M><M>') + '</M>' AS XML) 
     AS String  
     FROM  food) AS A CROSS APPLY String.nodes ('/M') AS Split(a);