mongodb field contains
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 ... ,If the $regex pattern does not contain an anchor, the pattern matches against the string as a whole, as in the following example: copy. copied. db.products.find( ...
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 mongodb field contains 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 $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 $regex — MongoDB Manual
If the $regex pattern does not contain an anchor, the pattern matches against the string as a whole, as in the following example: copy. copied. db.products.find( ... https://docs.mongodb.com $text — MongoDB Manual
The $text operator accepts a text query document with the following fields: .... So if a document field contains the word blueberry , a search on the term blue will ... https://docs.mongodb.com Check if a field contains a string in MongoDB - Tutorialspoint
Check if a field contains a string in MongoDB - You can use regex operator to check if a field contains a string in MongoDB The syntax is as ... https://www.tutorialspoint.com Checking if a field contains a string - Stack Overflow
As Mongo shell support regex, that's completely possible. .... a wildcard text index if you want to search any string field, like this: db.collection. https://stackoverflow.com How can I find all documents where a field contains a particular ...
2 ways to do this: With regular expression. MongoDB supports regular expression match. here's an example: users.find(firstname: /Jo/}, ... https://stackoverflow.com mongodb - Checking if a field contains a string - Stack Overflow
You can use a wildcard text index if you want to search any string field, like this: ... It contains one index entry for each unique post-stemmed word in each ... https://stackoverflow.com Query an Array — MongoDB Manual
MongoDB Manual - How to query an array: query on the array field as a whole ... To query if the array field contains at least one element with the specified value, ... https://docs.mongodb.com |