0
//Entry 1 (value 7)
{
stuff : "goods"
values : [7],
max : 7,
}
//Entry 2 (value : 3)
{
stuff : "goods"
values : [7, 3],
max : 7,
}
//Entry 3 (value : 9)
{
stuff : "goods"
values : [7, 3, 9],
max : 9,
}
事情我已經試過
db.people.aggregate(
{$match:{stuff:"goods"}},
{$unwind:"$values"},
{$max:1}
//lost ? {$set : {max : 1}} ??
);
真棒謝謝你。很有幫助的解釋! – stackoverflow