Explanation:Place the $match as early in the aggregation pipeline as possible.. 10. COUNT function is provided by _________ in MongoDB.
A. $end
B. $sum
C. $max
D. All of the mentioned
Answer:A
Explanation:Place the $match as early in the aggregation pipeline as possible.. 10. COUNT function is provided by _________ in MongoDB.
A. $end B. $sum C. $max D. All of the mentioned
Explanation:$sum ignores non-numeric values just like SQL. Sanfoundry Global Education & Learning Series – MongoDB.