如何删除聚集属性但保留表中的主键。 SQL Server 2005

Question

i have the following key:

ALTER TABLE dbo.Table ADD  CONSTRAINT PK_ID PRIMARY KEY CLUSTERED 
(
ID ASC
)

so i have clustered index and primary key on ID column. Now i need to drop clustered index (i want to create new clustered index on another column), but retain primary key. Is it possible?

Answer 1

It's not possible in one statement, but because DDL is transactional in MSSQL, you can simply do everything inside a transaction to prevent other sessions accessing the table while it has no primary key:

begin tran
alter table dbo.[Table] drop constraint pk_id
alter table dbo.[Table] add constraint pk_id primary key nonclustered (id)
commit tran

Answer 2

这是不可能的，因为索引是约束的物理实现。