mongodb 使用 AND 和 OR 查询
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mongodb queries both with AND and OR
提问by user1171632
can I use combination of OR and AND in mongodb queries?
我可以在mongodb 查询中使用OR 和AND 的组合吗?
the code below doesn't work as expected
下面的代码没有按预期工作
db.things.find({
$and:[
{$or:[
{"first_name" : "john"},
{"last_name" : "john"}
]},
{"phone": "12345678"}
]});
database content:
数据库内容:
> db.things.find();
{ "_id" : ObjectId("4fe8734ac27bc8be56947d60"), "first_name" : "john", "last_name" : "hersh", "phone" : "2222" }
{ "_id" : ObjectId("4fe8736dc27bc8be56947d61"), "first_name" : "john", "last_name" : "hersh", "phone" : "12345678" }
{ "_id" : ObjectId("4fe8737ec27bc8be56947d62"), "first_name" : "elton", "last_name" : "john", "phone" : "12345678" }
{ "_id" : ObjectId("4fe8738ac27bc8be56947d63"), "first_name" : "eltonush", "last_name" : "john", "phone" : "5555" }
when querying the above query - i get nothing!
查询上述查询时 - 我什么也没得到!
> db.things.find({$and:[{$or:[{"first_name" : "john"}, {"last_name" : "john"}]},{"phone": "12345678"}]});
>
I'm using mongo 1.8.3
我正在使用 mongo 1.8.3
采纳答案by SethO
I believe $and is only supported in MongoDB v2.0+. I'm surprised that the console accepted the expression in the first place. I'll try to recreate against a 1.8 server I have.
我相信 $and 仅在 MongoDB v2.0+ 中受支持。我很惊讶控制台首先接受了这个表达式。我将尝试针对我拥有的 1.8 服务器重新创建。
Also check 10Gen's Advanced Query Documentationfor $and
.
另请查看10Gen 的 Advanced Query Documentationfor $and
.
Update
更新
I entered your sample data into both a v1.8x and v2.0x MongoDB server. The query works on the v2.0x and fails on the v1.8x. This confirms my (and Miikka's) suspicions that the problem is with $and
and your server version.
我将您的示例数据输入到 v1.8x 和 v2.0x MongoDB 服务器中。查询在 v2.0x 上有效,在 v1.8x 上失败。这证实了我(和 Miikka)怀疑问题出在$and
您的服务器版本上。
I found a (arguably) clever workaround for this on the Web here. I hope this helps.
我发现这是一个(可以说)聪明的解决办法在网络上点击这里。我希望这有帮助。
-SethO
-SethO
回答by its4zahoor
db.things.find( {
$and : [
{
$or : [
{"first_name" : "john"},
{"last_name" : "john"}
]
},
{
"Phone":"12345678"
}
]
} )
ANDtakes an array of 2 expressions OR, phone.
ORtakes an array of 2 expressions first_name , last_name.
AND需要一个包含 2 个表达式OR的数组,电话。
OR采用 2 个表达式的数组 first_name , last_name 。
AND
和
OR
- first_name
- last_name
Phone Number.
或者
- 名
- 姓
电话号码。
Note: Upgrade to latest version of MongoDB, if this doesn't work.
注意:如果这不起作用,请升级到最新版本的 MongoDB。
回答by TechWisdom
Shorter to use an implicit AND operation:
更短的使用隐式 AND 运算:
db.things.find({
$or : [
{"first_name": "john"},
{"last_name": "john"}
],
"phone": "12345678"
})
回答by Chirag Purohit
This is possible in following manner (mongodb 3.4)
这可以通过以下方式(mongodb 3.4)
Here is the good example
这是一个很好的例子
db.getCollection('tbl_menu_items').find({ $and : [ { $or : [ { price : 0.99 }, { price : 1.99 } ] }, { $or : [ { sale : true }, { qty : { $lt : 20 } } ] } ] } )
This query will select all documents where:
此查询将选择所有文档,其中:
the price field value equals 0.99 or 1.99, and the sale field value is equal to true or the qty field value is less than 20.
price 字段值等于 0.99 或 1.99,而 sale 字段值等于 true 或 qty 字段值小于 20。
Here is the example of $and condition with $or query i.e matching any of condition for example
这是 $and 条件与 $or 查询的示例,即匹配任何条件,例如
consider following query...
考虑以下查询...
db.getCollection('tbl_menu_items').find( { '$or': [ { '$and': [ { location: { '$in': [ ObjectId("588054c63879f2e767a1d553") ] } }, { is_ryward: 1 }, { points_reqiured_to_redeem_reward: { '$lte': 500 } } ] }, { '$and': [ { location: { '$in': [ ObjectId("588054c63879f2e767a1d553") ] } }, { is_freebie: 1 } ] } ] } )
This query will select all documents where:
此查询将选择所有文档,其中:
location array in 588054c63879f2e767a1d553 and is_ryward = 1 and points_reqiured_to_redeem_reward < 500
位置数组在 588054c63879f2e767a1d553 和 is_ryward = 1 和 points_reqiured_to_redeem_reward < 500
Or
或者
location array in 588054c63879f2e767a1d553 and is_freebie
588054c63879f2e767a1d553 和 is_freebie 中的位置数组