1 CREATE TABLE #t1( 2 PlantNo varchar(4), 3 vendorCode varchar(10), 4 amount decimal(18,2)) 5 6 insert #t1 values('P112','1',10) 7 insert #t1 values('P112','2',20) 8 insert #t1 values('P112','3',30) 9 insert #t1 values('P112','4',40) 10 insert #t1 values('P115','1',10) 11 12 select #t1.plantno,vendorCode,amount,amount as amountTotal,amount as amountTotal2,amount as rate 13 into #t2 14 from #t1 order by plantNo,amount desc 15 16 update #t2 set amountTotal=(select SUM(amount) from #t1 where #t1.PlantNo=#t2.PlantNo) 17 update #t2 set amountTotal2=(select SUM(amount) from #t1 where #t1.PlantNo=#t2.PlantNo and amount>=#t2.amount) 18 update #t2 set rate=amountTotal2/amountTotal 19 select * from #t2 20 drop table #t1 21 drop table #t2 22 23 --結果 24 plantno vendorCode amount amountTotal amountTotal2 rate 25 P112 4 40.00 100.00 40.00 0.40 26 P112 3 30.00 100.00 70.00 0.70 27 P112 2 20.00 100.00 90.00 0.90 28 P112 1 10.00 100.00 100.00 1.00 29 P115 1 10.00 10.00 10.00 1.00
這部分程序的作用是統計前幾大累計的佔比問題。 比如:最富的那個人占了2%,第二的人占了1.5%，那麼前2個人累計占比3.5%。