SQL通過表變數，求百分比的小例子

declare @temptotaltable table (totalcount int ,task_keyword varchar(100),searchengine_name varchar(100),brand_name varchar(100))

declare @tempgiveuptable table (giveupcount int ,task_keyword varchar(100),searchengine_name varchar(100),brand_name varchar(100))
insert @temptotaltable
(totalcount,task_keyword,searchengine_name,brand_name)
(select 
count(1) as 抓取總數
,task_keyword
,searchengine_name
,brand_name         
from [sec_item] as a ,[iwt_brand] as b ,sec_searchengine as c
where a.brand_id=b.brand_id and a.brand_id=30015 and c.searchengine_id=a.searchengine_id   group by task_keyword,searchengine_name,brand_name
) insert @tempgiveuptable
(giveupcount,task_keyword,searchengine_name,brand_name)
(select 
count(1) as 放棄數
,task_keyword
,searchengine_name
,brand_name          
from [sec_item] as a ,[iwt_brand] as b ,sec_searchengine as c
where a.brand_id=b.brand_id and a.brand_id=30015 and c.searchengine_id=a.searchengine_id and item_state in (4,6)    group by task_keyword,searchengine_name,brand_name 
)  select isnull(cast(cast(b.giveupcount*1.0/a.totalcount*100 as decimal(10,1)) as varchar(20))+'%','0%')as [百分比],isnull(b.giveupcount,0) as 放棄數 , a.totalcount as 抓取總數,a.task_keyword,a.searchengine_name,a.brand_name from @temptotaltable as a  left join @tempgiveuptable as b on a.brand_name=b.brand_name and  a.task_keyword=b.task_keyword and a.searchengine_name=b.searchengine_name order by  a.totalcount desc

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