Question

My current query:

SELECT DACTIONMILLIS, DACTIONDATE INTO WF_DACTIONMILLIS, WF_DACTIONDATE 
FROM WORKFLOWHISTORY 
WHERE ddocname=? and LOWER(DACTION)=?
and lower(DWFSTEPNAME)=?
and lower(DUSER)=? 
and rownum = 1
ORDER BY DACTIONDATE desc;

But because the rownum is applied before the order by I’m getting invalid results. I found the following topic on stackoverflow: How do I limit the number of rows returned by an Oracle query after ordering? but that discusses a select, not a select into

Answer 1

SELECT DACTIONMILLIS, DACTIONDATE INTO WF_DACTIONMILLIS, WF_DACTIONDATE 
FROM (
    SELECT DACTIONMILLIS, DACTIONDATE, WF_DACTIONDATE 
    FROM WORKFLOWHISTORY 
    WHERE ddocname=? and LOWER(DACTION)=?
    and lower(DWFSTEPNAME)=?
    and lower(DUSER)=? 
    ORDER BY DACTIONDATE desc
)
WHERE rownum = 1