2014-11-11---------存储过程实例,光棍节

 1 -----------------------------------------

 2 --创建一个货物表:编号,货物名称,单位,价格,库存数量,备注。并输入条数据

 3 

 4 drop table kucun

 5 create table kucun

 6 (

 7     code int primary key,--编号列为主键

 8     name varchar(20),

 9     danwei varchar(10),

10     jiage money,

11     shengyu int,

12     beizhu varchar(50)

13 )

14 go

15 select *from kucun

16 insert into kucun values (1,'笔记本','',3,10,'尚宇 A5办公胶订本')

17 insert into kucun values (2,'中性笔','',1,20,'白雪 0.5黑色中性笔')

18 insert into kucun values (3,'保温杯','',15,8,'中宏 300ML保温杯')

19 insert into kucun values (4,'台式电脑','',2500,20,'联想商务电脑')

20 insert into kucun values (5,'键鼠','',30,15,'双飞燕键鼠套装')

21 insert into kucun values (6,'笔记本电脑','',4000,5,'DELL Inspiron15 3000(戴尔灵越)')

22 insert into kucun values (7,'无线鼠标','',80,7,'双飞燕无线光学鼠标')

23 insert into kucun values (8,'优盘','',70,10,'Kingston 16G')

24 insert into kucun values (9,'无线路由器','',80,6,'TP-Link 150M 双天线无线路由器')

25 insert into kucun values (10,'插排','',50,10,'公牛插排3M')

26 insert into kucun values (11,'未知','',10000,10,'这你也敢买')

27 update kucun set danwei='' where code=6

28 ---------------------------------------------

29 select *from kucun

30 --入库存储过程

31 --create proc jinchuProc

32 alter proc jinchuProc

33 @code int,

34 @name varchar(20),

35 @danwei varchar(10),

36 @jiage decimal(18,2),

37 @shengyu int,

38 @beizhu varchar(100)

39 as

40 begin

41     declare @count int

42     select @count=count(*) from kucun where code=@code

43     if @count=0 and @shengyu>0--仓库里没有的,新进来的货物

44     begin

45         insert into kucun values(@code,@name,@danwei,@jiage,@shengyu,@beizhu)

46         return 1

47     end

48     if @count=1 and @shengyu>0--仓库里已有的,进货,需要改变数量

49     begin

50         declare @ckshengyu int

51         select @ckshengyu=shengyu from kucun where code=@code

52         update kucun set shengyu=@shengyu+@ckshengyu where code=@code

53         return 2

54     end

55     if @shengyu<0 and @count=1--出货并且仓库里有这个货

56     begin

57         declare @kshengyu int

58         select @kshengyu=shengyu from kucun where code=@code

59         if @kshengyu>=(-@shengyu)

60         begin

61             update kucun set shengyu=@kshengyu+@shengyu where code=@code

62             return 0

63         end

64         else

65         begin

66             print '不够出货'

67             return -1

68         end

69     end

70     if @shengyu<0 and @count=0

71     begin

72         print '没有这个货物'

73         return -2

74     end

75 end

76 declare @i int

77 --exec @i=jinchuproc 3,'保温杯','',15,10,'中宏 300ML保温杯'

78 --exec @i=jinchuproc 3,'保温杯','',15,-10,'中宏 300ML保温杯'

79 --exec @i=jinchuproc 12,'文件夹','',5,10,'得力牌文件夹'

80 --exec @i=jinchuproc 13,'鼻烟壶','',30,-11,'华光陶瓷骨质瓷'

81 exec @i=jinchuproc 14,'鼻烟壶','',30,-11,'华光陶瓷骨质瓷'

82 print @i

83 select *from kucun

 

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