mongodb contain
You're looking for something that contains "m" somewhere (SQL's ' % ' operator is equivalent to Regexp's ' .* '), not something that has "m" anchored to the ... ,pattern matching on strings in MongoDB |version| ... If the pattern contains no anchors or if the string value has no newline characters (e.g. -n ), the m option has ...
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 mongodb contain 相關參考資料
mongodb - Checking if a field contains a string - Stack Overflow
As Mongo shell support regex, that's completely possible. .... Here's what you have to do if you are connecting MongoDB through Python https://stackoverflow.com How to query MongoDB with "like"? - Stack Overflow
You're looking for something that contains "m" somewhere (SQL's ' % ' operator is equivalent to Regexp's ' .* '), not something that has "m" anchored to... https://stackoverflow.com $regex — MongoDB Manual
pattern matching on strings in MongoDB |version| ... If the pattern contains no anchors or if the string value has no newline characters (e.g. -n ), the m option has ... https://docs.mongodb.com $in — MongoDB Manual
If the field holds an array, then the $in operator selects the documents whose field holds an array that contains at least one element that matches a value in the ... https://docs.mongodb.com $text — MongoDB Manual
The negated word excludes documents that contain the negated word from the result set. When passed a search string that only contains negated words, text ... https://docs.mongodb.com $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 $exists — MongoDB Manual - MongoDB Documentation
When <boolean> is true, $exists matches the documents that contain the field, including documents where the field value is null . If <boolean> is false, the query ... https://docs.mongodb.com $all — MongoDB Manual
The $all operator selects the documents where the value of a field is an array that contains all the specified elements. To specify an $all expression, use the ... https://docs.mongodb.com Checking if a field contains a string - Stack Overflow
Here's what you have to do if you are connecting MongoDB through Python db.users.find("username": '$regex' : '.*' + 'Son' + '.*'}}). you may also use a va... https://stackoverflow.com Text Search — MongoDB Manual
MongoDB provides text indexes to support text search queries on string content. text indexes can include any field whose value is a string or an array of string ... https://docs.mongodb.com |