Question

在mongo shell中，我可以执行此命令：

db.getSiblingDB('myDatabase')
.myCollection
.find({ 
    city_id:{$ne:123}, 
    company: {$not: new RegExp('^acme.*', 'i')}
})
.forEach(function (item) {
    var x = db.myCollection.findOne({
        city_id:123, 
        company:'abc123'
    });
    item.address = x.address;
    item.phone = x.phone;

    db.myCollection.deleteOne({_id: item._id});
    db.myCollection.insert(item);
});

如何在pymongo或任何其他mongodb python驱动程序中编写？

Answer 1

使用pyMongo，您可以执行类似

的操作

for item in db.myDatabase.myCollection.find({ 
    city_id:{$ne:123}, 
    company: {$not: new RegExp('^acme.*', 'i')}
}):
   //Do what you are doing in ForEach fucntion

您可以在PyMongo中引用insert和remove。

Answer 2

根据@AnirudhBagri的建议，以下是有效的：

x = db.myCollection.find_one({city_id:123, company:'abc123'})
for item in db.myCollection.find({"$and": [{"city_id": {'$ne':123}}, {"company": {'$not': re.compile('^acme.*')}}]}):
    item.address = x.address
    item.phone = x.phone
    db.myCollection.delete_one({"_id": item._id});
    db.myCollection.insert(item)

如何在Pymongo中编写涉及正则表达式的原始MongoDB命令

2 个答案: