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This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
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This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
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Oracle load XML long character value and replace html escaping («"»)
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MongoDB Indexing the Entire Document (Wildcard Indexing)
Indexing the Entire Document (Wildcard Indexing)
In the last example, we put a combined index on the subject and content fields. But there can be scenarios where you want any text content in your documents to be searchable.
For example, consider storing emails in MongoDB documents. In the case of emails, all the fields, including Sender, Recipient, Subject and Body, need to be searchable. In such scenarios you can index all the string fields of your document using the $** wildcard specifier.
The query would go something like this (make sure you are deleting the existing index before creating a new one):
db.messages.createIndex({"$**":"text"})
This query would automatically set up text indexes on any string fields in our documents. To test this out, insert a new document with a new field location in it: