-- 以省市表为例，主键自增
CREATE TABLE [nis_provinces] (
[id] [int] IDENTITY (1, 1) NOT NULL ,
[provinces] [nvarchar] (50) COLLATE Chinese_PRC_CI_AS NOT NULL ,
[fatherid] [int] NOT NULL ,
CONSTRAINT [PK_nis_provinces] PRIMARY KEY CLUSTERED
(
[id]
) ON [PRIMARY]
) ON [PRIMARY]
GO
insert into nis_provinces values('北京市',0);
想插入北京各区数据，在oracle中，可以这样写：
insert into nis_provinces values('东城区',select id from nis_provinces where provinces='北京市') ;
但在sql server的insert语句中，不能使用子查询，要写成这样:
insert into nis_provinces select '东城区',id from nis_provinces where provinces='北京市';
insert into nis_provinces select '西城区',id from nis_provinces where provinces='北京市';