我有兩個表如下。從左連接選擇最大值
Profile : ID
Charac : ID, NAME, DATE
通過以上表格,我試圖從得到NAME甜心,我們有最大日期。
我試圖做的通過複製MySQL的回答像下面
proc sql;
create table ggg as
select profile.ID ,T2.NAME
from Profile
left join
( select ID,max(DATE) as max_DATE
from EDW.CHARAC
group by ID
) as T1
on fff.ID = EDW.ID
left join EDW.CHARAC as T2
on T2.ID = T1.max_DATE
order by profile.ID DESC;
quit;
錯誤
ERROR: Unresolved reference to table/correlation name EDW.
ERROR: Expression using equals (=) has components that are of different data types.
'EDW.CHARAC'這應該是'EDW.CHARA'?另外,'EDW.ID'應該引用'Chara'的ID嗎? – Compass 2014-10-17 14:51:45
@Compass對不起,對於第一個錯字。是的兩個表即Profile和CHARAC都有「ID」。 – LonelySoul 2014-10-17 14:55:27