"MongoDB" The high query operation of MongoDB (ii)

In the last blog, there is three query condition to be described. In the blog, we'll continue to what we had leant in the last blog.

1 $mod

' $mod ' operation is able-make us-to-do simple mod operation, and is no need to use where sentence.

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2. $ne, $in, $nin

' $ne ' means not equal. ' $in ' is same as key word ' in ' in relationship. $nin is opsitive to ' in '

3. $or and $nor

Durning the mutiple conditions, then result would be is return that it is only matches one condition among condition.

As for $noe, which are in contrast with $no, let's learn it from the following the picture.

4. $size

$size operation would query result whose size is equailvant to size of input.

5. $where

6. $type $type would find the data according the type of Bson field. For example:

The following picture is the type of Bson type.

"MongoDB" The high query operation of MongoDB (ii)