MongoDB TutorialLesson 10Free preview

MongoDB Query Operators

This lesson is part of MongoDB · All levels

Summary

This lesson brings together MongoDB query operators to compile complex search criteria. Comparison operators like $eq, $gt, $gte, $lt, $lte, $ne, and $in compare field values, whereas $and, $or, and $not combine conditions. All of these operators make filters much more expressive than simple value matches.

Key points

The comparison operator: $eq, $ne, $gt, $gte, $lt, $lte, $in, $nin
$in matches the score on the candidate list
$or and $and combine some conditions logically
$not reverse the condition of the operator in it

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