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日期:2024-07-12
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 > db.name.find({a: 5}) { "_id" : ObjectId("53dcd070340ac74e061d7215"), "a" : 5, "b" : 5, "c" : 5 } > db.name.find({a: 5}).explain() { "cursor" : "BasicCursor", "isMultiKey" : false, "n" : 1, "nscannedObje...看更多