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本帖最后由 aggopie 于 2018-9-23 14:20 编辑
{"author": "Mike",
... "text": "Another post!",
... "tags": ["bulk", "insert"],
... "date": datetime.datetime(2009, 11, 12, 11, 14)},
{"author": "Eliot",
... "title": "MongoDB is fun",
... "text": "and pretty easy too!",
... "date": datetime.datetime(2009, 11, 10, 10, 45)}
{"author": "Allen",
... "title": "MongoDB is fun",
... "text": "and pretty easy too!",
... }
如果mongodb里面有三组数据，你们怎么找到没有"date"那组的那一组，谢谢，如果数据量很大，那么怎样速度比较快
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