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Lucene queries example

Syntax

http://lucene.apache.org/core/old_versioned_docs/versions/2_9_4/queryparsersyntax.html

Looking for words

In case we want to find all documents with property Text containing some word.

Text:Word

Looking for phrases

In case we want to find all documents with property Text containing specified sentence.

Text:"several words"

DateTime ranges

Take a look at these tests.

http://github.com/ravendb/ravendb/commit/721c50ea51ff7721928cca76de957e9f7d9e3786

How can I query for a null value?

Assuming when the document was saved the property's value was null; let us say we want to find all users that didn't provide their Email. This is the query that we will need to issue:

Email:[[NULL_VALUE]]

The [[ ]] denotes a NotAnalyzed value, and Raven writes NULL_VALUE to the Lucene index when it encounters a null being indexed.

How can I query for a non-null blank or empty string?

Assuming when the document was saved the property's value was a non-null blank/empty string; let us say we want to find all users that didn't provide their LastName. In order to query for a non-null blank or empty string we will need to issue:

LastName: [[EMPTY_STRING]]

The [[ ]] denotes a NotAnalyzed value, and Raven writes EMPTY_STRING to the Lucene index when it encounters a non-null empty/blank string being indexed.