<div class="jb51code">
<pre class="brush:sql;">
ORDER BY _column1,_column2; / _column1升序，_column2升序 /
ORDER BY _column1,_column2 DESC; / _column1升序，_column2降序 /
ORDER BY _column1 DESC,_column2 ; / _column1降序，_column2升序 /
ORDER BY _column1 DESC,_column2 DESC; / _column1降序，_column2降序 /
