代码示例如下: /** * mongodb使用and配合or查询。 * 以下相当于 sql: * select * from MongoDbTest where status=1 and (userId="abc" or price>=2) */publicvoidandOrOperator(){ Criteria criteria = Criteria.where("status").is(1); Criteria criteria1 = Criteria.where("userId").is("abc")...
3、逻辑运算符$or 比如查询user表中name为“小博”或者“测试小博”的数据: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 db.user.find({name:{$in:['小博','测试小博']}})db.user.find({$or:[{name:{$eq:'小博'}},{name:{$eq:'测试小博'}}]})db.user.find({$or:[{name:'小博...
DB.prototype.runCommand@src/mongo/shell/db.js:168:1 DB.prototype.adminCommand@src/mongo/shell/db.js:185:1 rs.stepDown@src/mongo/shell/utils.js:1433:12 @(shell):1:1 2022-01-27T09:45:21.009+0800 I NETWORK [js] trying reconnect to 172.16.0.104:27017 failed 2022-01-27T09:45:21.009+0...
正则模糊,or, and,日期查询 db.getCollection('cabinTermRecord').find({ "$and" : [ { "$or" : [ { "personnelName" : { "$regex" : ".*能.*"}} , { "termMac" : { "$regex" : ".*能.*"}}]} , { "departureTime" : { "$gte" : 1634692496461 , "$lt" : 1634693096108}}]})...
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使用$or条件评估条款,MongoDB会扫描整个文档集合,如果所有的条件支持索引,MongoDB进行索引扫描,因此MongoDB使用索引执行$or表达式,$or中的所有表达式必须支持索引,否则的话MongoDB就会扫描整个集合。 当使用$or查询并且使用索引时,每个$or的条件表达式都可以使用自己的索引,考虑下面的查询: ...
For details on a specific operator, including syntax and examples, click on the link to the operator's reference page. Compatibility You can usequery and projection operatorsfor deployments hosted in the following environments: MongoDB Atlas: The fully managed service for MongoDB deployments in the...
(starting in mongodb 5.0) you cannot read/write to collections in the config , admin , or local databases. you cannot write to system.* collections. you cannot return the supported operation's query plan using explain or similar commands. for cursors created outside of a transaction, you ...
This query was possible with the $lt operator. Here are its brothers and sisters: $lte: less than or equal $gt: greater than $gte: greater than or equal. They have the same syntax as $lt. Selecting with logical conditional operators in MongoDB MQL also includes logical conditional ...
You can set labels and/or annotations as key/value string pairs in the Custom Resource metadata section of thedeploy/cr.yamlas follows: apiVersion:psmdb.percona.com/v1kind:PerconaServerMongoDBmetadata:name:my-cluster-nameannotations:percona.com/issue-vault-token:"true"labels:... ...