无法删除sql server 2005中的约束“”无法删除约束。参见先前的错误“ [英] Unable to drop constraint in sql server 2005 "Could not drop constraint. See previous errors"

问题描述

我试图删除数据库表上的约束，例如：

  ALTER TABLE MyTable删除CONSTRAINT FK_MyTable_AnotherTable 
  

但是执行只是运行和运行。如果我停止它，我看到：

 消息3727，级别16，状态0，行2 
无法删除约束。查看以前的错误。 
  

Web搜索会抛出各种页面，但是注意约束被正确命名，使用正确的名称

解决方案

找到一种排序方法，虽然我不明白为什么它是必要的。 >

已经能够通过首先禁用约束来删除约束：

  ALTER MyTable NOCHECK CONSTRAINT FK_MyTable_AnotherTable 
  

下落然后完成

仍然欢迎对必要原因的任何意见

I'm trying to drop a constraint on a db table, something like:

ALTER TABLE MyTable drop CONSTRAINT FK_MyTable_AnotherTable

But the execution just runs and runs. If I stop it I see:

Msg 3727, Level 16, State 0, Line 2
Could not drop constraint. See previous errors.

Web search throws up various pages but note that the constraint is properly named and I am trying to remove it using the correct name

解决方案

Found a way to sort this, although I don't understand why it was necessary.

Have been able to drop the constraint by disabling it first:

ALTER MyTable NOCHECK CONSTRAINT FK_MyTable_AnotherTable

The drop then completes fine

Would still welcome any comments on the reason why this is necessary

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