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

View Code

 1 create table customer 
 2 (
 3 customerID int primary key identity(1,1) ,
 4 customerName varchar(50),
 5 cuslinkMan varchar(50),
 6 customerPhone varchar(12),
 7 companyAdress varchar(100)
 8 )
 9 
10 create table supplier
11 (
12 supplierID INT primary key identity(1,1) ,
13 supplierName varchar(50),
14 supLinkeMan varchar(50),
15 supAdress varchar(100)
16 )
17 
18 create table orderForm
19 (
20 orderID int identity(1,1),
21 orderNum varchar(50),
22 customerID int,
23 supplierID int,
24 orderMoney decimal ,
25 custState int,
26 orderState int ,
27 orderTime datetime,
28 constraint pk_order primary key(orderID) ,
29 constraint fk_supplier foreign key(supplierID) references supplier(supplierID),
30 constraint fk_customer foreign key(customerID) references customer(customerID)
31 )
32 
33 insert into customer(customerName,cuslinkMan,customerPhone,companyAdress) values(\'太阳\',\'刘敏\',\'18762676815\',\'无锡西区\')
34 
35 insert into dbo.supplier(supplierName,supLinkeMan,supAdress) 
36 values(\'安泰\',\'李丹\',\'大连\')
37 
38 
39 insert into dbo.orderForm(orderNum,customerID,supplierID,orderMoney,custState,orderState,orderTime) 
40 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.

View Code

 1 SET ANSI_NULLS ON
 2 GO
 3 SET QUOTED_IDENTIFIER ON
 4 GO
 5 
 6 create  PROCEDURE 订单查询
 7 
 8     @订单日期 datetime,
 9     @客户  varchar(50),
10     @供应商  varchar(50)
11 AS
12 BEGIN
13     SET NOCOUNT ON;
14 
15    
16     SELECT orderNum, C.customerName,S.supplierName ,orderMoney,custState ,orderState ,orderTime 
17     from dbo.orderForm O,dbo.customer  C,dbo.supplier S    
18     where 
19     C.customerID=O.customerID 
20     and S.supplierID=O.supplierID 
21     --判断O.orderTime 
22     and
23     (
24     
25     @订单日期 =\'\'
26     or @订单日期 is null or O.orderTime = @订单日期 
27     )
28     and --判断客户
29     (
30        @客户=\'-1\' or C.customerName=@客户     
31     )
32     and--判断供应商
33     (
34        @供应商=\'-1\' or S.supplierName=@供应商
35     )    
36     
37 END 
38 GO
39 
40 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。

 

View Code

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
GO

ALTER PROCEDURE [dbo].[订单金额前三]
    
    
AS
BEGIN
    
    SET NOCOUNT ON;

    -- Insert statements for procedure here
    SELECT 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.customerID
    order 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）

View Code

SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO

CREATE 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 here
    update dbo.orderForm
    set supplierID=null 
    where supplierID=@供应商1ID
      or supplierID=@供应商2ID
      or supplierID=@供应商3ID
      
      delete from dbo.supplier  
      where supplierID=@供应商1ID
      or supplierID=@供应商2ID
      or supplierID=@供应商3ID
    
    
END
GO

exec 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
BEGIN

    SET NOCOUNT ON;

    -- Insert statements for procedure here
    SELECT * from orderForm A where  not EXISTS 
    (
    select supplierID from dbo.supplier B where B.supplierID=A.supplierID
    )
END
GO

exec 查询无供应商的订单信息