The MongoDB Compass query bar autocompletes the current query based on the keys in your collection's documents, including keys in embedded sub-documents. Specify Conditions Using Query Operators Aquery filter documentcan use thequery operatorsto specify conditions in the following form: ...
参数size:当capped值为true时,需要指定此参数,表示上限大小,当文档达到上限时,会将之前的数据覆盖,单位为字节 db.createCollection("sub", { capped : true, size : 10 } ) 1. 例3:创建固定集合 sub,整个集合空间大小 6142 KB, 文档最大个数为 100 个。 db.createCollection("sub", { capped : true,...
#数据如下: db.shuozhuo.insert({kfuin:2355005970,array:["1111","2222","3333"]}) #查询命令如下: db.shuozhuo.find({array:{$elemMatch:{$eq:"1111"}}}) #貌似这个更直观写 db.shuozhuo.find({array:{$in:["2222"]}}) 1. 2. 3. 4. 5. 6. ③数组修改器——数组中追加/移除元素 db....
{"explainVersion" : "1",//执行计划的版本,可以忽略"queryPlanner" : {//queryPlanner,就是执行计划。 这部分重点看"namespace" : "test.dailyTrip",//就是collection和所在db"indexFilterSet" :false,//是否设置了索引过滤器集合,Filter决定了查询优化器对于某个查询将如何使用索引"parsedQuery" : {//经过...
...Type T_small MArray2() As String End Type Sub Array_In_Array() Dim MArray(10) As T_small ' 设置主数组的大小...(MARRAY2)的大小 '循环以创建新的虚拟内部数组的大小 - Option Base 1使数组下标以1开始而不是0 '在本例中,我们将使内部数组的设置值为5,可以是任意值或动态值 '***.....
, or ldap queries is out of scope for the mongodb documentation. please review the rfc directly or use your preferred ldap resource. for each document in the array, you must use either substitution or ldapquery . you cannot specify both in the same document. when performing authentication or...
This array indexing syntax works for many other operators, not just $exists. Projections (restricting fields) One last thing we are going to cover in the tutorial is projections. Up until this point, our query results included every single field in each document. This is not ideal when your...
Set the filter property: Specifies selection filter using query operators. To return all documents in a collection, omit this parameter or pass an empty document ({}). Type: string (or Expression with resultType string). Parameters: filter - the filter value to set. Returns: the MongoDbV2...
SubInsNames array 子实例列表。 SubInsNames string 子任务名称。 sub1369716295573-tes2cy6***.2013052818*** 示例 正常返回示例 JSON格式 { "PageNumber": 1, "RequestId": "111E7B16-0A87-4CBA-B271-F34AD61E***", "PageSize": 30, "TotalRecordCount": 1, "Items": [ { "Status": 3, "Ch...
isMultiKey是否是Multikey,此处返回是false,如果索引建立在array上,此处将是true。 explain.queryPlanner.winningPlan.direction:此query的查询顺序,此处是forward,如果用了.sort({modify_time:-1})将显示backward。 explain.queryPlanner.winningPlan.indexBounds:winningplan所扫描的索引范围,如果没有制定范围就是[MaxKey...