Disabling foreign key constraint, still can't truncate table? (SQL Server 2005)

Question

I have a table called PX_Child that has a foreign key on PX_Parent. I\'d like to temporarily disable this FK constraint so that I can truncate PX_Parent. I\'m not sure how

Answer 1

There is no such option to truncate table while foreign key constraint but we can use some trick like

 ALTER TABLE [dbo].[table2] DROP CONSTRAINT [FK_table2_table1]
    GO
    truncate table [table1]
GO
    ALTER TABLE [dbo].[table2]  WITH CHECK ADD  CONSTRAINT [FK_table2_table1] FOREIGN KEY([FKId])
    REFERENCES [dbo].[table1] ([ID])
    GO

    ALTER TABLE [dbo].[table2] CHECK CONSTRAINT [FK_table2_table1]
    GO