mongodb match type
For comparison of different BSON type values, see the specified BSON ... If the specified <value> is an array, MongoDB matches documents where the <field> ... ,$match takes a document that specifies the query conditions. The query syntax is identical to the read operation query syntax; i.e. $match does not accept raw ...
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 mongodb match type 相關參考資料
$elemMatch (query) — MongoDB Manual
The $elemMatch operator matches documents that contain an array field with at least one element that matches all the specified query criteria. copy. copied. https://docs.mongodb.com $eq — MongoDB Manual
For comparison of different BSON type values, see the specified BSON ... If the specified <value> is an array, MongoDB matches documents where the <field> ... https://docs.mongodb.com $match (aggregation) — MongoDB Manual
$match takes a document that specifies the query conditions. The query syntax is identical to the read operation query syntax; i.e. $match does not accept raw ... https://docs.mongodb.com $regex — MongoDB Manual
Provides regular expression capabilities for pattern matching strings in queries. MongoDB uses Perl compatible regular expressions (i.e. “PCRE” ) version 8.41 ... https://docs.mongodb.com $type (aggregation) — MongoDB Manual
Unlike the $type query operator, which matches array elements based on their BSON type, the $type aggregation operator does not examine array elements. https://docs.mongodb.com $type — MongoDB Manual
A $type expression for a single BSON type has the following syntax: Changed in version 3.2. The above query will match documents where the field value is any of the listed types. The types specified i... https://docs.mongodb.com BSON Types — MongoDB Manual
BSON is a binary serialization format used to store documents and make remote procedure calls in MongoDB. The BSON specification is located at ... https://docs.mongodb.com db.collection.aggregate() — MongoDB Manual
Parameter, Type, Description ... Field, Type, Description .... groups the matching documents by the cust_id field and calculates the total for each cust_id field from ... https://docs.mongodb.com MongoDB Match an array with $type? - Stack Overflow
Actually there is a "gotcha" listed in the documentation for $type specifically about arrays: When applied to arrays, $type matches any inner ... https://stackoverflow.com MongoDB: 4.MongoDB的條件操作符(1)
For comparison of different BSON type values, see the specified BSON ... $gte, Matches values that are greater than or equal to the value ... http://mongodbcanred.blogspot. |