存储过程

针对下面2个完整性约束条件，建立存储过程，实现当数据导入或更新时，可以自动修改拥塞率、半速率话务量比例
(1) 拥塞率　＝　拥塞数量／呼叫数量
(2) 半速率话务量比例　＝　半速率话务量／全速率话务量

create procedure update_callInfo
as
begin
update callInfo set  callcongs = congsnum/ callnum
update callInfo set  rate = thtraff/traff
end

/*
小区信息查询。通过下拉框中用户选定的小区ID，列出小区相关信息
*/
create proc CellInfo(@cellid int) as
begin
select *
from cell
where cellid = @cellid
end
调用：exec CellInfo 9011

/*
拥塞小区查询。根据用户设定的拥塞率门限(conGate)，开始时(startTime)，结束时间(endTime),得到小区(cellid)，小时级话务量(avgTraff)，小时级拥塞率(congsP)，小时级半话务量比例(thtraffP)
startTime，endTime 格式为YYYYMMDDhh
时间time存储格式为int，含义为hhmmss，time/10000为小时
日期date格式为YYYYMMDD
*/
create proc CongesCellInfo(@conGate float, @startTime int, @endTime int) as
begin
select cellid, (date*100 + time/10000) as hour, avg(traff) as avgTraff,
sum(congsnum)/sum(callnum) as congsP,
sum(thtraff)/sum(traff) as thtraffP
from data
where (date*100 + time/10000) >= @startTime and (date*100 + time/10000) <= @endTime
group by cellid, (date*100 + time/10000)
having sum(congsnum)/sum(callnum) >= @conGate
order by (date*100 + time/10000) asc
end
调用：exec CongesCellInfo 0.2, 2007101416, 2007101720