Created
December 28, 2018 07:57
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mongodb日常操作
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| //查找单个字段 | |
| db.users.find({_id:ObjectId("5c25b4fdc32ea0b85da2a3bc")}, {"address":1}) | |
| //更新数组 | |
| db.users.update({_id:ObjectId("5c25b504c32ea0b85da2a3bd")}, {$push:{address:ObjectId("5c25cf01c32ea0b85da2a3c8")}}) | |
| //一对多关系查询 | |
| var result = db.users.findOne({_id:ObjectId("5c25b504c32ea0b85da2a3bd")}, {"address":1}) | |
| db.address.find({_id:{$in:result["address"]}}) |
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