標籤:mongodbIn the past two blogs, the topic mainly focus on the high query operation of mongodb.In this blog, we simply study the regex expression in the mongdb. MongoDB also support the regex query. For exampleThe expression is also able to
標籤:mongodb1, Sort Needless to say, mongodb also support to sort data. THe positive one means sorting by asc order and negetive means by desc.2. GroupThe grammar of group:Description Of Argument:key: The field need to group cond: query
標籤:mongodbIn 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. 1 $mod ‘$mod‘ operation is able to make us to do simple mod operation, but is no need to use
標籤:mongodbIn the last blog, we talked about the basic operation of MongoDB, including insert, query, remove and update. Now in this blog, we will further hava a good understanding of querying operation. At first, let‘s create 1000 recors