mongodb子文档查询
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mongodb子文档查询
"logTimeStamp" : {"$gte":1466477620000}}},
{$unwind: "$staDetailList"},
{$sort: {"staDetailList.logTime": -1}},
{$limit: 3},
{"$group": {"_id": "$_id", "staDetailList": {"$push": "$staDetailList"}}}
)