sql server 函数，存储过程，游标以及while和if语句的嵌套使用
编写这个存储过程的主要原因是自己太懒，不愿意每天往表里面做数据，所以就写了他。不仅仅是学习，也是自己的锻炼。
USE [oaerp]
GO
/****** Object: StoredProcedure [dbo].[s_Get_AutoYh] Script Date: 02/11/2015 17:17:35 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
-- =============================================
-- Author:
-- Create date:
-- Description:
-- =============================================
ALTER PROCEDURE [dbo].[s_Get_AutoYh]
@sdtm datetime=null,--开始的时间
@edtm datetime=null,--结束的时间
@DepoID char(10)=null,
@UserID char(20)=null,
@type varchar(30)=null,
-- 影响的行数
@num int=null output
AS
--一般药品养护记录（ybyh）
if (@type='ybyh')
BEGIN
--创建一张临时表
select a.* into #tmpyh from dbo.GetGoodsBatchListUnReal(@DepoID,'') a inner join ggoods b on a.goodsid=b.goodsid
left join gGoodsExt c on b.goodsid =c.goodsid
where a.amount >0
and b.catid like '01%'
and c.storeid !='07'
order by a.effdate
declare @days int --计算天数
declare @count int --统计要养护的数据
declare @Idx int
declare @n int --记录每天需要插入的数据
declare @m int --记录执行的天数
declare @Doccode varchar(30)
declare @GoodsID char(10)
declare @Amount decimal(18,6)
declare @BatchNo varchar(40)
declare @EffDate datetime
declare @StockArea char(2)
declare @Station char(2)
declare @CheckResult char(2)
declare @DoMethod char(2)
declare @MakID char(10)
declare @MakDtm datetime
-- 开始和结束时间的差就是本次需要添加养护记录天数
set @days = datediff(day,@sdtm,@edtm)
if @days = 0
begin
set @days = 1
end
--得到总的记录数，即当前店所有的品种
select @count = count(*) from #tmpyh
--设置每天的记录条数，向下取整。
set @n=floor(@count/30)
set @m=1
--开始事务
--begin tran
begin try
set @makdtm =@sdtm
while(@days>0)
begin
declare ybyh cursor global-- 定义一个游标
read_only
for select goodsid,batchno,effdate,amount from #tmpyh
open ybyh
----如果执行的天数在输入的时间范围内
--while(@m<=@days)
--begin
-- --每执行三十天，结束一次循环。
-- if(@m%30!=0)
-- BEGIN
-- 打开游标
--给参数赋值@goodsid,@batchno,@effdate,@amount
fetch next from ybyh into @goodsid,@batchno,@effdate,@amount
--执行游标第一条记录
--=fetch next from ybyh
exec [s_Get_DocCodeSerial_ByTradeID] @TradeID='60',@depoID=@DepoID,@DocCode=@DocCode output
while (@@fetch_status = 0)
BEGIN
--执行每天需要插入的数据，当@n小于零的时候跳出循环
--while(@n>0)
--begin
--if not exists(select * from zGspyhRecord where goodsid =@goodsid and isnull(batchno,'')=isnull(@batchno,'') and isnull(effdate,'') =isnull(@effdate,''))
--begin
select @stockarea = case a.otcid
when '01' then '00'
when '02' then '01'
when '03' then '02'
end
from ggoods a where goodsid =@goodsid
select @Idx=isnull(max(Idx),0)+1 from zGspyhRecord where DocCode=@DocCode
--设置时间和养护员信息
set @MakID=@UserID
--select DATEADD(dd,5550,'2015-02-12 11:11:13')
insert into zGspyhRecord(DocCode, DepoID, Idx, GoodsID, Amount,BatchNo, EffDate, StockArea, Station, CheckResult, DoMethod, MakID, MakDtm, CheID, CheDtm)
values(@DocCode,@DepoID,@Idx,@GoodsID,@Amount,@BatchNo,@EffDate,@stockarea,'00','00','03',@MakID,@MakDtm,null,null)
set @n=@n-1
--在秒上面加上idx序号，作为新的时间的秒
set @Idx=@Idx+1
set @MakDtm=DATEADD(SS,@Idx,@MakDtm)
print('today had '+str(@n) )
if @n<=0
begin
exec [s_Get_DocCodeSerial_ByTradeID] @TradeID='60',@depoID=@DepoID,@DocCode=@DocCode output
set @MakDtm=DATEADD(DD,1,@MakDtm)
set @days =@days -1
set @n=floor(@count/30)
if(@days%30=0)
begin
print('days:'+str(@days))
break
end
end
--end
-- 执行游标，获得数据，直到读取所有的数据集合
fetch next from ybyh into @goodsid,@batchno,@effdate,@amount
--end
--END
--set @m=@m+1 --设置天数增加1天
--set @MakDtm=DATEADD(DD,1,@MakDtm)
END
close ybyh -- 关闭游标
deallocate ybyh -- 删除游标
end
--返回执行的记录，如果大于0，表示执行成功
set @num =@@rowcount
select @num
--commit tran
--结束事务
end try
begin catch
print error_message()
--rollback tran
end catch
END