go mongodb Pipeline 聚合查询格式

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$minaggregate := mongo.Pipeline{<br>   {<br>      {"$match" ,bson.D{<br>         { "season_id", seasonId},<br>         {"data_source_at",bson.M{"$gte": start}},<br>         {"data_source_at",bson.M{"$lte": end}},<br>      },<br>      },<br>   },<br>   {<br>      {"$group", bson.D{<br>         {"_id", "$student_id"},<br>         {"win_count", bson.D{<br>            {"$sum", "$win_count"},<br>         }},<br>         {"up_star", bson.D{<br>            {"$sum", "$up_star"},<br>         }},<br>      }},<br>   },<br><br>}