sql相同表不同查詢條件合並顯示

關鍵字：FULL JOIN

只要其中某個表存在匹配，FULL JOIN 關鍵字就會返回行。

select a.createtime, ISNULL(lp, 0) lp , ISNULL(hp, 0) hp
 from (
    select  convert(nvarchar(10),cCreateTime,23) as createtime,count(iTotalAmount) as lp
    from vat_inv_standard 
    where iCharacter = 0 and iStatus = 0 and DateDiff(dd,cCreateTime,getdate())<=7
    group by convert(nvarchar(10),cCreateTime,23)
) A FULL JOIN (
    select convert(nvarchar(10),cCreateTime,23) as createtime,count(iTotalAmount) as hp 
    from vat_inv_standard 
    where iCharacter = 1 and iStatus = 0 and DateDiff(dd,cCreateTime,getdate())<=7
    group by convert(nvarchar(10),cCreateTime,23)
) B on  a.createtime =  b.createtime
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作者：卡爾小布丁 
來源：CSDN 
原文：https://blog.csdn.net/ljh1993531/article/details/80077594 

詳細教程：http://www.w3school.com.cn/sql/sql_join_full.asp