mongodb query find string
Provides regular expression capabilities for pattern matching strings in queries. MongoDB uses Perl compatible regular expressions (i.e. “PCRE” ) version 8.42 ... ,Returns a substring of a string, starting at a specified index position and including the specified number of characters. The index is zero-based. $substr has the ... ,Field, Type, Description. $search, string, A string of terms that MongoDB parses and uses to query the text index. MongoDB performs a logical OR search of the ... , See: http://www.mongodb.org/display/DOCS/Advanced+Queries# ... You can use a wildcard text index if you want to search any string field, like ...,db.collection. find (query, projection)¶ ... When the find() method “returns documents,” the method is actually returning a cursor to the documents. ... is not returned because its qty value is of type string while the $gt operand is of type integer . , Instead of this: db.database.find(A: $regex: '/^*(abc def)*$/''}}). You should do this: db.database.find(A: /abc def/i }). ^* is not actually valid ...,note: mongodb uses regular expressions which are more powerful than ... I am giving different types of requirements and solutions for string search with regex. ,db.inventory.find( tags: $in: [ /^be/, /^st/ ] } } ). This query selects all documents in the inventory collection where the tags field holds either a string that starts ... ,Use the $text query operator to perform text searches on a collection with a text index. $text will tokenize the search string using whitespace and most punctuation as delimiters, and perform a logical OR of all such tokens in the search string.
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 mongodb query find string 相關參考資料
$regex — MongoDB Manual - MongoDB Docs
Provides regular expression capabilities for pattern matching strings in queries. MongoDB uses Perl compatible regular expressions (i.e. “PCRE” ) version 8.42 ... https://docs.mongodb.com $substr (aggregation) — MongoDB Manual - MongoDB Docs
Returns a substring of a string, starting at a specified index position and including the specified number of characters. The index is zero-based. $substr has the ... https://docs.mongodb.com $text — MongoDB Manual
Field, Type, Description. $search, string, A string of terms that MongoDB parses and uses to query the text index. MongoDB performs a logical OR search of the ... https://docs.mongodb.com Checking if a field contains a string - Stack Overflow
See: http://www.mongodb.org/display/DOCS/Advanced+Queries# ... You can use a wildcard text index if you want to search any string field, like ... https://stackoverflow.com db.collection.find() — MongoDB Manual - MongoDB Docs
db.collection. find (query, projection)¶ ... When the find() method “returns documents,” the method is actually returning a cursor to the documents. ... is not returned because its qty value is of typ... https://docs.mongodb.com How to find a substring in a field in Mongodb - Stack Overflow
Instead of this: db.database.find(A: $regex: '/^*(abc def)*$/''}}). You should do this: db.database.find(A: /abc def/i }). ^* is not actually valid ... https://stackoverflow.com How to query MongoDB with "like"? - Stack Overflow
note: mongodb uses regular expressions which are more powerful than ... I am giving different types of requirements and solutions for string search with regex. https://stackoverflow.com MongoDB Query operator - MongoDB Docs
db.inventory.find( tags: $in: [ /^be/, /^st/ ] } } ). This query selects all documents in the inventory collection where the tags field holds either a string that starts ... https://docs.mongodb.com Text Search — MongoDB Manual
Use the $text query operator to perform text searches on a collection with a text index. $text will tokenize the search string using whitespace and most punctuation as delimiters, and perform a logica... https://docs.mongodb.com |