General Search Query in Solr

Question

I have tried to run a single term search in Solr 9.0 through by using

q=term

(e.g. http://localhost:8983/solr/windowstest/select?indent=true&q.op=OR&q=yelp).

I've noticed that older versions of Solr were able to handle such a request but now I can only search all fields for that term by adding using OR

q=id:yelp OR subject:yelp OR body:yelp

(e.g. http://localhost:8983/solr/windowstest/select?indent=true&q.op=OR&q=id%3Ayelp%20OR%20subject%3Ayelp%20OR%20body%3Ayelp).

Is there a way to not have to indicate the fields?

Answer 1

There is no setting for "searching all fields"; however, what is usually done is to have a single field as the copyField destination for all fields. You can do this by defining a catch-all field (by default named _text_, and then configuring <copyField src="*" dest="_text_"> - making the content of all the fields get copied into _text_.

You can then set the default search field (i.e. where there isn't a field name given) with the df parameter in the query - the default field.

http://localhost:8983/solr/windowstest/selectq.op=OR&q=yelp&df=_text_

If you want to set this as the default, you configure it as a default parameter in solrconfig.xml under the specific request handler:

<requestHandler name="/select" class="solr.SearchHandler">
  <lst name="defaults">
    <str name="df">_text_</str>
    <int name="rows">10</int>
  </lst>
</requestHandler>

.. or by using initparams:

<initParams path="/update/**,/query,/select,/tvrh,/elevate,/spell">
  <lst name="defaults">
    <str name="df">_text_</str>
  </lst>
</initParams>