Sql Server 创建表（可重复执行--范本）

use [GUOYOUZI.Study]

if exists (select 1
   from sys.sysreferences r join sys.sysobjects o on (o.id = r.constid and o.type = 'F')
   where r.fkeyid = object_id('UnitPriceDetail') and o.name = 'FK_UNITPRICEDETAIL_FK_BASICINFO')
alter table UnitPriceDetail
   drop constraint FK_UNITPRICEDETAIL_FK_BASICINFO
go

if exists (select 1
            from  sysobjects
           where  id = object_id('UnitPriceDetail')
            and   type = 'U')
   drop table UnitPriceDetail
go

/*==============================================================*/
/* Table: UnitPriceDetail                                       */
/*==============================================================*/
create table UnitPriceDetail (
   UnitID               int                  identity,
   BasicInfoID          int                  null,
   Title                nvarchar(50)         null,
   UnitAmount           decimal(18,8)        null,
   Remark               nvarchar(200)        null,
   constraint PK_UNITPRICEDETAIL primary key (UnitID)
)
go

declare @CurrentUser sysname
select @CurrentUser = user_name()
execute sp_addextendedproperty 'MS_Description', 
   '价明细表(UnitPriceDetail)',
   'user', @CurrentUser, 'table', 'UnitPriceDetail'
go

declare @CurrentUser sysname
select @CurrentUser = user_name()
execute sp_addextendedproperty 'MS_Description', 
   '基础信息主键',
   'user', @CurrentUser, 'table', 'UnitPriceDetail', 'column', 'BasicInfoID'
go

declare @CurrentUser sysname
select @CurrentUser = user_name()
execute sp_addextendedproperty 'MS_Description', 
   '标题',
   'user', @CurrentUser, 'table', 'UnitPriceDetail', 'column', 'Title'
go

declare @CurrentUser sysname
select @CurrentUser = user_name()
execute sp_addextendedproperty 'MS_Description', 
   '单价金额',
   'user', @CurrentUser, 'table', 'UnitPriceDetail', 'column', 'UnitAmount'
go

declare @CurrentUser sysname
select @CurrentUser = user_name()
execute sp_addextendedproperty 'MS_Description', 
   '备注',
   'user', @CurrentUser, 'table', 'UnitPriceDetail', 'column', 'Remark'
go

alter table UnitPriceDetail
   add constraint FK_UNITPRICEDETAIL_FK_BASICINFO foreign key (ID)
      references BasicInfo (ID)
go