SQl函数的写法

USE [ChangHong_612]
GO
/****** Object: UserDefinedFunction [dbo].[FN_GetProdQty] Script Date: 10/08/2015 14:05:16 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
/***********************************************
-- Author: lxf
-- Create date: 2012-12-08 10:25:00
-- Description: 求产品数
-- Module: Public
select dbo.FN_GetProdQty('2013112007','20131120070002','(CKZ1110-002)','P01',1.01,'2013-09-13 00:00','2013-09-13 23:59')
***********************************************/
ALTER FUNCTION [dbo].[FN_GetProdQty]
(
@MO varchar(20),
@DispatchNO varchar(50),
@ItemNO varchar(20),
@ProcCode varchar(20) = '',
@DispatchPrior float ,
@StartDate varchar(20),
@EndDate varchar(20)
)
RETURNS int
AS
BEGIN
DECLARE @OpenMouldNum int, --开模数
@StockNum int,
@RETURN int,
@charType char(1) --机器类型，1表示注塑机，2表示植毛机
set @OpenMouldNum= 0
select @charType=isnull(m.MachineClsId,'1')
from V_DispatchOrder d
join mes_machine m on d.MachineNO=m.MachineNO
where MO = @MO
and DispatchNO = @DispatchNO
and (@DispatchPrior = 0 or DispatchPrior = @DispatchPrior)
and ItemNo = @ItemNO
and (@ProcCode = '' or ProcCode = @ProcCode)
--结束时间大于当前时间，自动截断
if(@EndDate <> '')
begin
if(getdate()<convert(datetime,@EndDate))
begin
set @EndDate = convert(varchar(19),getdate(),121)
end
end


select @OpenMouldNum = dbo.FN_GetProdMoNum(@MO, @DispatchNO, @DispatchPrior, @StartDate, @EndDate, @ProcCode)

IF (@charType = '1')
BEGIN
SELECT @RETURN=@OpenMouldNum * isnull(do.SocketNum,0) --注塑机的数量等于开模数*模穴数
FROM V_DispatchOrder DO
WHERE DO.MO = @MO and DO.DispatchNO = @DispatchNO
and (@ProcCode = '' or ProcCode = @ProcCode)
and (@DispatchPrior = 0 or DispatchPrior = @DispatchPrior)
and DO.ItemNO = @ItemNO
END
ELSE IF (@charType = '2')
BEGIN
SELECT @RETURN=isnull(CAST(PM.FieldValue as int),0)*isnull(cast(PP.FieldValue as int),0)*@OpenMouldNum
FROM V_DispatchOrder DO
left JOIN dbo.MES_MachineExt PM ON DO.MachineNo = PM.MachineNo
left JOIN dbo.MES_ItemExt PP ON DO.ItemNO = PP.ItemNO
WHERE DO.MO = @MO and DO.DispatchNO =@DispatchNO
and (@ProcCode = '' or ProcCode = @ProcCode)
and (@DispatchPrior = 0 or DispatchPrior = @DispatchPrior)
and DO.ItemNO= @ItemNO
and PM.FieldName='GroupNum' and PP.FieldName='OutNum'
END
Else
BEGIN
SELECT @RETURN = @OpenMouldNum
END
if @RETURN is null set @RETURN=0
if @RETURN<=0 set @RETURN=0
RETURN @RETURN
END

------------------------------------------

USE [ChangHong_612]
GO
/****** Object: UserDefinedFunction [dbo].[FN_GetAdjustMachineQty] Script Date: 10/08/2015 14:50:05 ******/
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
/***********************************************
--Author: lxf
--Create date:2012.12.14
--select dbo.FN_GetAdjustMachineQty('2014082203','20140822030001','1201154',1.01,'','','','P01')
--Description:取得调机时的产品数。
***********************************************/

ALTER function [dbo].[FN_GetAdjustMachineQty]
(
@MO varchar(100),
@DispatchNO varchar(100),
@ItemNO varchar(50),
@DispatchPrior float,
@BeginDate varchar(20),
@EndDate varchar(20),
@ClassType varchar(20) = '',
@ProcCode varchar(20) = ''
)
returns int
as
begin
declare @GoodQty int,@BadQty int
set @GoodQty=0
set @BadQty=0

if @BeginDate=''
set @BeginDate='1900-01-01 00:00:00'

if @EndDate=''
set @EndDate=GETDATE()

select @GoodQty = sum(isnull(GoodQty,0))
from(
select DispatchNo, ItemNO, GoodQty,
(select name from
(select Name,BeginTime,
case
when BeginTime>EndTime then Cast(CAST(SUBSTRING(endtime,1,2) as int)+24 as varchar)+':00'
else EndTime end
EndTime
from MES_BCDetail
)
b
where BeginTime<convert(char(5),a.StartDate,108) and EndTime >convert(char(5),a.StartDate,108)
)
as ClassType
from MES_AdjustMachine a
where DispatchNO = @DispatchNO and ItemNO = @ItemNO
and (@DispatchPrior = 0 or DispatchPrior = @DispatchPrior)
and (@ProcCode = '' or ProcCode = @ProcCode)
and (StartDate IS NOT NULL AND EndDate IS NOT NULL)
and (EndDate>=@BeginDate AND StartDate<=@EndDate)
) a
where @ClassType = '' or ClassType = @ClassType

select @BadQty = sum(isnull(BadQty,0))
from(
select DispatchNo, ItemNO, BadQty,
(select name from (select Name,BeginTime,case when BeginTime>EndTime then Cast(CAST(SUBSTRING(endtime,1,2) as int)+24 as varchar)+':00'
else EndTime end EndTime from MES_BCDetail ) b where BeginTime<convert(char(5),a.QcDate,108) and EndTime >convert(char(5),a.QcDate,108)) as ClassType
from MES_Qc a
where qctype in(44,36,25,26,24,47) and DispatchNO = @DispatchNO and ItemNO = @ItemNO
and (@DispatchPrior = 0 or DispatchPrior = @DispatchPrior)
and (@ProcCode = '' or ProcCode = @ProcCode)
and (QCDate>=@BeginDate AND QCDate<=@EndDate)
) a
where @ClassType = '' or ClassType = @ClassType

return isnull(@GoodQty,0)+isnull(@BadQty,0)
end