$inc - MongoDB Manual v8.0
Use the $inc operator to increment field values by specified amounts. $inc creates fields if absent, errors on null values, and is atomic within a document.
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$inc - MongoDB Manual v4.4
The $inc operator accepts positive and negative values. If the field does not exist, $inc creates the field and sets the field to the specified value. Use of the $inc operator on a field with a null value will generate an error. $inc is an atomic operation within a single document. Example
MongoDB: The Developer Data Platform
Get your ideas to market faster with a developer data platform built on the leading modern database. MongoDB makes working with data easy.
$inc — MongoDB Manual
The $inc operator accepts positive and negative values. If the field does not exist, $inc creates the field and sets the field to the specified value. Use of the $inc operator on a field with a null value will generate an error. $inc is an atomic operation within a single document.
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$inc — MongoDB Manual
The $inc operator accepts positive and negative values. If the field does not exist, $inc creates the field and sets the field to the specified value. Use of the $inc operator on a field with a null value will generate an error. $inc is an atomic operation within a single document.
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