Solr what is qf

Improved version of DisMax. Handles full lucene query syntax while still tolerating syntax errors. Input to Query Parsers comprises of: Search strings for querying in index Parameters for fine tuning this search like boosting, query-fields, query-slopes, filter queries etc. Parameters for controlling the response presentation like fl, wt etc. Can be used with either numerical or alphabetical content. If this time expires, any partial results will be returned, but values such as numFound, facet counts, and result stats may not be overall accurate.

Overidden by qf QueryField sow Split on whitespace Seeting to false, very useful for analysis of words without splitting like multi-word synonyms, shingles etc. By default: true, analysis is invoked on each space separated word. Query sent to StandarQueryParser is composed of terms and operators.

Proximity searches Looks for terms that are within a specific distance from one another. The distance referred to here is the number of term movements needed to match the specified phrase.

DisMax Query Parser Designed for processing simple phrases without complex syntax entered by users and searching for individual terms across several fields using different boosting.

DisMax stands for Maximum Disjunction Standard Definition: Query which generates the union of documents produced by its subqueries, and that scores each document with the maximum score for that document as produced by any subquery, plus a tie breaking increment for any additional matching subqueries.

Quotes are necessary to encapsulate the function when it includes parentheses. Quotes are often necessary to encapsulate the nested query if it contains reserved characters. Although not technically a syntax difference, note that if you use the Solr TrieDateField type, any queries on those fields typically range queries should use either the Complete ISO Date syntax that field supports, or the DateMath Syntax to get relative dates. Toggle navigation Solr Ref Guide 6. In addition to supporting all the DisMax query parser parameters, Extended Dismax:.

The sow Parameter Split on whitespace: if set to false , whitespace-separated term sequences will be provided to text analysis in one shot, enabling proper function of analysis filters that operate over term sequences, e. The mm. The boost Parameter A multivalued list of strings parsed as queries with scores multiplied by the score from the main query for all matching documents.

The pf2 Parameter A multivalued list of fields with optional weights, based on pairs of word shingles. The ps2 Parameter This is similar to ps but overrides the slop factor used for pf2. The pf3 Parameter A multivalued list of fields with optional weights, based on triplets of word shingles.

The ps3 Parameter This is similar to ps but overrides the slop factor used for pf3. The stopwords Parameter A Boolean parameter indicating if the StopFilterFactory configured in the query analyzer should be respected when parsing the query: if it is false, then the StopFilterFactory in the query analyzer is ignored.

The uf Parameter Specifies which schema fields the end user is allowed to explicitly query. Find centralized, trusted content and collaborate around the technologies you use most.

Connect and share knowledge within a single location that is structured and easy to search. I guess you are not using dismax parser and using the default settings in solrconfig.

The df stands for default field , while the qf stands for query fields. The field defined by the df parameter is used when no fields are mentioned in the query. The df parameter is supported by the default Solr request handler.

The qf parameter is something used by the dismax query parser and the edismax query parser. Try adding it and you should get the search results. How are we doing? Please help us improve Stack Overflow. However, if I explicitly check the edismax checkbox and enter the field-boost data in the qf and pf boxes I get the results and the weighting I would expect. In fact, I also just tried changing the rows value to 5 and still received the same result.

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