This PR introduces a new query called `combined_fields` for searching multiple
text fields. It takes a term-centric view, first analyzing the query string
into individual terms, then searching for each term any of the fields as though
they were one combined field. It is based on Lucene's `CombinedFieldQuery`,
which takes a principled approach to scoring based on the BM25F formula.
This query provides an alternative to the `cross_fields` `multi_match` mode. It
has simpler behavior and a more robust approach to scoring.
Addresses #41106.
This adds a "note" on the docs for the script query pointing folks to
runtime fields because they are more flexible. It also translates the
request example into runtime fields.
Co-authored-by: Adam Locke <adam.locke@elastic.co>
When performing a multi_match in cross_fields mode, we group fields based on
their analyzer and create a blended query per group. Our docs claimed that the
group scores were combined through a boolean query, but they are actually
combined through a dismax that incorporates the tiebreaker parameter.
This commit updates the docs and adds a test verifying the behavior.
The doc is misleading : The following intervals search returns documents containing `my favorite food` **immediately** followed by `hot water` or `cold porridge`
max_gaps apply only to the match query and is not used for checking proximity with the other match, the example given actually`This search would match a my_text value of my favorite food is cold`
Co-authored-by: Julien Guay <guay_j@yahoo.fr>
The original description of per-field boosting is incorrect. Boosting a
field does not imply that it is more important relative to other fields.
It simply means that the score is multiplied by the supplied boost
value. Due to the differences in each field's term and document
statistics, it's not possible to imply relative importance of fields
based on the per-field boost value alone.
Co-authored-by: Josh Devins <josh.devins@elastic.co>
Backport to add case insensitive support for regex queries.
Forks a copy of Lucene’s RegexpQuery and RegExp from Lucene master.
This can be removed when 8.7 Lucene is released.
Closes#59235
Changes:
* Moves "Notes" sections for the joining queries and percolate query
pages to the parent page
* Adds related redirects for the moved "Notes" pages
* Assigns explicit anchor IDs to other "Notes" headings. This was required for
the redirects to work.
Plugin discovery documentation contained information about installing
Elasticsearch 2.0 and installing an oracle JDK, both of which is no
longer valid.
While noticing that the instructions used cleartext HTTP to install
packages, this commit replaces HTTPs links instead of HTTP where possible.
In addition a few community links have been removed, as they do not seem
to exist anymore.
Co-authored-by: Alexander Reelsen <alexander@reelsen.net>
Moves the search sort docs from the deprecated 'Request Body Search'
page to a new subpage of 'Run a search'.
No substantive changes were made to the content.
Moves the highlighting docs from the deprecated 'Request Body Search'
chapter to the new subpage of the 'Run a search chapter' section.
No substantive changes were made to the content.
