SQL排序查询

1.建一张客户表，包含客户名称，联系人，电话号码，公司地址.

2.建一张订单表，包含订单编号，客户ID,供应商ID,订单金额，客户支付状态，供应商支付状态,订单日期.

3.建一张供应商表，包含供应商名称，联系人，电话号，供应商地址

create table customer 
(
customerID int primary key identity(1,1) ,
customerName varchar(50),
cuslinkMan varchar(50),
customerPhone varchar(12),
companyAdress varchar(100)
)

create table supplier
(
supplierID INT primary key identity(1,1) ,
supplierName varchar(50),
supLinkeMan varchar(50),
supAdress varchar(100)
)

create table orderForm
(
orderID int identity(1,1),
orderNum varchar(50),
customerID int,
supplierID int,
orderMoney decimal ,
custState int,
orderState int ,
orderTime datetime,
constraint pk_order primary key(orderID) ,
constraint fk_supplier foreign key(supplierID) references supplier(supplierID),
constraint fk_customer foreign key(customerID) references customer(customerID)
)

insert into customer(customerName,cuslinkMan,customerPhone,companyAdress) values('太阳','刘敏','18762676815','无锡西区')

insert into dbo.supplier(supplierName,supLinkeMan,supAdress) 
values('安泰','李丹','大连')


insert into dbo.orderForm(orderNum,customerID,supplierID,orderMoney,custState,orderState,orderTime) 
values('0001','1','1','10000','0','0','2012.12.21')

练习一：写存储过程，根据订单日期，客户，供应商来查询订单，包含客户，供应商名称，订单详细信息，订单日期可以为空，客户跟供应商可以全选.

SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO

create  PROCEDURE 订单查询

    @订单日期 datetime,
    @客户  varchar(50),
    @供应商  varchar(50)
AS
BEGIN
    SET NOCOUNT ON;

   
    SELECT orderNum, C.customerName,S.supplierName ,orderMoney,custState ,orderState ,orderTime 
    from dbo.orderForm O,dbo.customer  C,dbo.supplier S    
    where 
    C.customerID=O.customerID 
    and S.supplierID=O.supplierID 
    --判断O.orderTime 
    and
    (
    
    @订单日期 =''
    or @订单日期 is null or O.orderTime = @订单日期 
    )
    and --判断客户
    (
       @客户='-1' or C.customerName=@客户     
    )
    and--判断供应商
    (
       @供应商='-1' or S.supplierName=@供应商
    )    
    
END 
GO

EXEC 订单查询 '2012-12-21','星星','上海'

练习二：写存储过程，查询订单数最多的前3个客户的订单信息。

方法一：
ALTER PROCEDURE [dbo].[订单总数前三]
    
AS
BEGIN
        
    SELECT O.*
    from dbo.orderForm O
    where     
     O.customerID in
    (
    SELECT top 3  O.customerID -- ,COUNT(O.orderNum) as 'aaa'
    from dbo.orderForm O
    group by O.customerID
    order by COUNT(O.orderNum) DESC
    )
END

方法二：
CREATE PROCEDURE 订单前三
AS
BEGIN    
  select O.* from orderForm  O
join
(
select
   top 3  customerID
from(
   select customerID ,COUNT(orderNum) AS EE FROM dbo.orderForm GROUP BY customerID
) as TT order by EE desc
)as KK
on O.customerID = KK.customerID  
END
GO

练习三：写存储过程，查询订单金额最多的前3个客户的订单信息。

 

USE [test]
GO
/****** Object:  StoredProcedure [dbo].[订单金额前三]    Script Date: 12/26/2012 09:30:19 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GOALTER PROCEDURE [dbo].[订单金额前三]AS
BEGINSET NOCOUNT ON;-- Insert statements for procedure hereSELECT O.orderID,  C.customerID ,customerName,S.supplierName ,orderMoney,custState ,orderState ,orderTime from dbo.orderForm O,dbo.customer  C,dbo.supplier S    where C.customerID=O.customerID and S.supplierID=O.supplierID  and O.customerID in (SELECT top 3 O.customerID  --, sum(O.orderMoney)AS 订单总金额 from dbo.orderForm O    group by O.customerIDorder by sum(O.orderMoney) desc)
END

 

 

 

练习四：写sql，删除3条供应商数据，并且相应订单的供应商ID也置为null（这里应该是更新操作）

SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GOCREATE PROCEDURE 删除供应商信息 -- Add the parameters for the stored procedure here@供应商1ID int,@供应商2ID int,@供应商3ID int
AS
BEGIN-- SET NOCOUNT ON added to prevent extra result sets from-- interfering with SELECT statements.SET NOCOUNT ON;-- Insert statements for procedure hereupdate dbo.orderFormset supplierID=null where supplierID=@供应商1IDor supplierID=@供应商2IDor supplierID=@供应商3IDdelete from dbo.supplier  where supplierID=@供应商1IDor supplierID=@供应商2IDor supplierID=@供应商3IDEND
GOexec 删除供应商信息 '2','3','4'

练习五：查询不存在供应ID的订单信息，用(not exits)

CREATE PROCEDURE  查询无供应商的订单信息AS
BEGINSET NOCOUNT ON;-- Insert statements for procedure hereSELECT * from orderForm A where  not EXISTS (select supplierID from dbo.supplier B where B.supplierID=A.supplierID)
END
GOexec 查询无供应商的订单信息