Apache Solr Reference Guide Covering Apache Solr 6.0

Grouping Terms to Form Sub-Queries
Lucene/Solr supports using parentheses to group clauses to form sub-queries. This can be very useful if you
want to control the Boolean logic for a query.
The query below searches for either "jakarta" or "apache" and "website":
(jakarta OR apache) AND website
This adds precision to the query, requiring that the term "website" exist, along with either term "jakarta" and
"apache."
Grouping Clauses within a Field
To apply two or more Boolean operators to a single field in a search, group the Boolean clauses within
parentheses. For example, the query below searches for a title field that contains both the word "return" and the
phrase "pink panther":
title:(+return +"pink panther")
Comments
C-Style comments are supported in query strings.
Example:
"jakarta apache" /* this is a comment in the middle of a normal query string */ OR
jakarta
Comments may be nested.
Differences between Lucene Query Parser and the Solr Standard Query Parser
Solr's standard query parser differs from the Lucene Query Parser in the following ways:
A * may be used for either or both endpoints to specify an open-ended range query
field:[* TO 100] finds all field values less than or equal to 100
field:[100 TO *] finds all field values greater than or equal to 100
field:[* TO *] matches all documents with the field
Pure negative queries (all clauses prohibited) are allowed (only as a top-level clause)
-inStock:false finds all field values where inStock is not false
-field:[* TO *] finds all documents without a value for field
A hook into FunctionQuery syntax. You'll need to use quotes to encapsulate the function if it includes
parentheses, as shown in the second example below:
_val_:myfield
_val_:"recip(rord(myfield),1,2,3)"
Support for using any type of query parser as a nested clause.
inStock:true OR {!dismax qf='name manu' v='ipod'}
Support for a special filter(...) syntax to indicate that some query clauses should be cached in the
filter cache (as a constant score boolean query). This allows sub-queries to be cached and re-used in
other queries.
For example inStock:true will be cached and re-used in all three of the queries below:
q=features:songs OR filter(inStock:true)
q=+manu:Apple +filter(inStock:true)
q=+manu:Apple & fq=inStock:true
This can even be used to cache individual clauses of complex filter queries. In the first query below, 3
items will be added to the filter cache (the top level fq and both filter(...) clauses) and in the
second query, there will be 2 cache hits, and one new cache insertion (for the new top level fq):
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