In the last blog, there are three query condition to be described. In the blog, we will continue to what we have leant in the last blog.
‘$mod‘ operation is able to make us to do simple mod operation, but is no need to use where sentence.
‘$ne’ means not equal. ‘$in‘ is same as key word ‘in‘ in relationship. $nin is opsitive to ‘in‘
durning the mutiple conditions, then result will be return that it only matches one condition among condition.
as for $noe, which is in contrast with $no, let‘s learn it from the following the picture.
$size operation will query result whose size is equailvant to size of input.
【MongoDB】The high query operation of MongoDB（二）
原文：http://blog.csdn.net/sxb0841901116/article/details/39458641
