在SqlServer中用自定义函数返回动态表内容

说明：在SupplyPlan表中，存储着每一个RequestQty及其对应的开始终止日期段；因为我在以后处理中要判断当前天属于哪一条RequestQty的日期区间并进行处理，所以后台数据库只能设计成这种存储形式；但是在页面的显示时候，需要动态的根据每一个SupplyPlanNo生成对应的多条日期区段及其数量显示，所以采用自定义函数形式返回处理以后的动态记录集！返回的字段@AllRequestQty为"1|13|5|8"形式，在asp中就可以采用split函数分组从而动态显示字段。

/*

** add by wls For: convert many lines of SP datas to one char group by vehicle,part

*/

CREATE FUNCTION xzc.fn_getContent_SupplyPlan

(@s_p_no int = NULL,

@viewFlag varchar(1) = ''

)

RETURNS @fn_getContent_SupplyPlan TABLE

(

ID varchar(8000),

SupplyPlanNo int,

Vehicle varchar(25),

Sort varchar(20),

Part varchar(25),

RequestQty varchar(8000),

Remark varchar(255)

)

AS

BEGIN

DECLARE @sVehicle varchar(25), @sSort varchar(20)

DECLARE @sPart varchar(25), @iVehicle varchar(25)

DECLARE @iPart varchar(25), @sRemark varchar(255)

DECLARE @RequestQty int , @theID int

DECLARE @AllRequestQty varchar(8000), @allID varchar(8000)

select @AllRequestQty = ''

select @allID = ''

/*Outer CURSOR*/

DECLARE getVehiclePartSP CURSOR SCROLL FOR

select distinct Vehicle, Sort, Part from SupplyPlan

where SupplyPlanNo = @s_p_no and ViewFlag = @viewFlag

/* --Order by ID desc

select Vehicle, Sort, Part from (select min(ID) as ID, Vehicle, Sort, Part from SupplyPlan

where SupplyPlanNo = @s_p_no group by Vehicle, Sort, Part) a order by a.ID desc

*/

/*Inner CURSOR*/

DECLARE getContentSP CURSOR SCROLL FOR

select ID, Vehicle, Part, RequestQty

from SupplyPlan where SupplyPlanNo = @s_p_no and ViewFlag = @viewFlag order by ID

if @s_p_no IS NULL or @s_p_no = ''

begin

RETURN

end

OPEN getVehiclePartSP

FETCH first from getVehiclePartSP into @sVehicle,@sSort,@sPart

while(@@fetch_status = 0)

BEGIN

OPEN getContentSP

FETCH first from getContentSP into @theID, @iVehicle, @iPart, @RequestQty

while(@@fetch_status = 0)

BEGIN

if @iVehicle = @sVehicle and @iPart = @sPart

begin

select @allID = @allID + '|' + convert(varchar(15), @theID)

select @AllRequestQty = @AllRequestQty + '|' + convert(varchar(25), @RequestQty)

end

FETCH next from getContentSP into @theID, @iVehicle, @iPart, @RequestQty

END

CLOSE getContentSP

select @allID = xzc.trim_char(@allID, '|')

select @AllRequestQty = xzc.trim_char(@AllRequestQty, '|')

select @sRemark = (select top 1 Remark from SupplyPlan where SupplyPlanNo = @s_p_no

and Vehicle = @sVehicle and Part = @sPart)

INSERT INTO @fn_getContent_SupplyPlan VALUES(@allID, @s_p_no, @sVehicle, @sSort, @sPart, @AllRequestQty, @sRemark)

select @AllRequestQty = ''

select @allID = ''

select @sRemark = ''

FETCH next from getVehiclePartSP into @sVehicle,@sSort,@sPart

END

DEALLOCATE getContentSP

CLOSE getVehiclePartSP

DEALLOCATE getVehiclePartSP

RETURN

END