初学MongoDB

1.排序+模糊查询

Aggregation aggregation1 = Aggregation.newAggregation(Aggregation.match(Criteria.where("shopName").regex("^.*" + "1号" + ".*$")),Aggregation.sort(new Sort(Sort.Direction.DESC,"eventTime")));
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2.分组+统计

       Criteria criteria = Criteria.where("eventTime").regex(date);
        // dau uv
        Aggregation agg = Aggregation.newAggregation(Aggregation.match(criteria),
                Aggregation.group("channel", "deviceId"),
                Aggregation.group("channel").count().as("dau"));
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