Aggregation Expression - $min

Function Build

Build $min with the Min function from the aggregation package.

// bson.D{bson.E{Key:"minScore", Value:bson.D{bson.E{Key:"$min", Value:"$score"}}}}
result := aggregation.Min("minScore", "$score")

Method Build (Builder)

Build $min with the Min method from aggregation.NewBuilder().

// bson.D{bson.E{Key:"minScore", Value:bson.D{bson.E{Key:"$min", Value:"$score"}}}}
result := aggregation.NewBuilder().
    Min("minScore", "$score").
    Build()

Build Without Key

When an expression needs to be passed as an argument to another expression, use a WithoutKey variant to build an expression fragment without an output field name.

MinWithoutKey

Function build:

// bson.D{bson.E{Key:"$min", Value:"$score"}}
expr := aggregation.MinWithoutKey("$score")

Method build (Builder):

// bson.D{bson.E{Key:"$min", Value:"$score"}}
expr := aggregation.NewBuilder().
    MinWithoutKey("$score").
    Build()