合併ID重複的列的值

Question

我有一個ID列可以包含重複項的表，因爲它用作外鍵來匹配我的主表。可以有每個ID多個結果，如下面的例子：

ID  FieldValue 
1  This 
2  Also this 
1  and that 
3  And additionally, this. 
2  and, finally, this. 

我怎麼會去合併fieldValue方法列，以便有每個ID只有一排？例如。

ID  FieldValue 
1  This;and that 
2  Also this;and, finally, this. 
3  And additionally, this. 

我不會擔心是否重複的行必須保留，例如，

ID  FieldValue 
1  This;and that 
2  Also this;and, finally, this. 
1  This;and that 
3  And additionally, this. 
2  Also this;and, finally, this. 

正如我可以只運行在他們DISTINCT查詢現在，他們是真正的重複。谷歌搜索一段時間沒有結果;我懷疑這是因爲它有幾個步驟，我需要知道這些步驟在搜索之前是多麼富有成效。

任何想法？

Answer 1

如果你正在使用MySQL，你可以嘗試這樣的事：

SELECT GROUP_CONCAT(FiledValue) As Result FROM tablename WHERE ID= '1'