$lt (aggregation)
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Definition
-
$lt
-
Compares two values and returns:
true
when the first value is less than the second value.false
when the first value is greater than or equivalent to the second value.
The
$lt
compares both value and type, using the specified BSON comparison order for values of different types.$lt
has the following syntax:For more information on expressions, see Expressions.
Example
Consider an inventory
collection with the following documents:
The following operation uses the $lt
operator to determine if qty
is less than 250
:
The operation returns the following results: