mongodb三种去重方式

这里补充用mongodb去重的3种方式：

1、db.info_store_dynamic_info.distinct("store_id",{"time_type":2});

2、db.runCommand({"distinct":"info_store_dynamic_info","key":"store_id","time_type":2});

3、

db.getCollection('info_store_daily_info').aggregate({$group:{'_id':{'store_id':'$store_id','is_push':'$is_push'}}})