小编Dar*_*age的帖子

我正在尝试删除所有用户，但出现错误：

Msg 547, Level 16, State 0, Line 1
The DELETE statement conflicted with the REFERENCE constraint "FK_M02ArticlePersons_M06Persons". The conflict occurred in database "workdemo.no", table "dbo.M02ArticlePersons", column 'M06PersonId'.
The statement has been terminated.

查询：

DELETE FROM [workdemo.no].[dbo].[M06Persons] 
WHERE ID > '13'
GO

似乎我需要使用，on delete cascade;但我被卡住了。

这个查询给了我多个点击，因为每个assetid可能包含很多vb.title. 如何将结果限制为每个仅 1 次命中assetid？

'select DISTINCT v.id,
           v.purchasedate,
           v.customerid,
           v.assetid,
           va.description,
           vb.title
  from purchases v,
           asset va,
           assetdescription vb
 where customerid = '$kid'
   and v.assetid = va.id
   and vb.assetid = va.id
 order by v.purchasedate'