我的目标是以“DESCENDING”的顺序打印查询的结果.但是问题是,具有NULL值的行在列表的顶部.如何将空行放在底部,如果顺序是降序？
select mysubcat.subcat,mysubcat.subcatid as subcat_id,(select SUM(myad.PAGEVIEW)
from myad
where MYAD.CREATEDDATE between '01-JUL-13 02.00.49.000000000 PM' and '13-JUL-13 02.00.49.000000000 PM'
AND MYAD.status = 1
and MYAD.mobileapp IS NULL
and myad.subcatid = mysubcat.subcatid )as web_views
from mysubcat
order by web_views desc;
样品结果如此
SUBCAT_ID WEB_VIEWS Swimming Lessons 56 (null) Medical Services 17 (null) Mobile Phones & Tablets 39 6519 Home Furnishing & Renovation 109 4519
顺序是降序,我只想把打印结果底部的空值为空,那么怎么办？
解决方法
您可以使用DESC NULLS LAST来实现.
这是Oracle的official documentation.
NULLS LAST
Specifies that NULL values should be returned after non-NULL values.
