création de table de quota unique sqlserver et cas de requête de base

  Créez une table de quota unique. 

 Ajouter des données, interroger des opérations

create table limitdemo02(
ID int identity(1,1),  --不设置主键自增
limitedu decimal(18,1),
limitcode decimal(18,1),
edukeyonge decimal(18,1),
edushengxiaori datetime null,
edushixiaori datetime null,
beizhu nvarchar(100) null,
ifstop nvarchar(100) null,
type nvarchar(100) null,
blname nvarchar(100) null,
danjuzhuangtai nvarchar(100) NULL,
creator varchar(100) null,
createdDate datetime null,

);
go
--删除表
drop table limitdemo;
create table limitdemo(
ID int Null,  --不设置主键自增
limitedu decimal(18,1),
limitcode decimal(18,1),
edukeyonge decimal(18,1),
edushengxiaori datetime null,
edushixiaori datetime null,
beizhu nvarchar(100) null,
ifstop nvarchar(100) null,
type nvarchar(100) null,
blname nvarchar(100) null,
danjuzhuangtai nvarchar(100) NULL,
creator varchar(100) null,
createdDate datetime null,
);
go
--
select * from limitdemo;
--add data 
insert into limitdemo(id,blname,creator,limitedu)values(1,'保理公司01'