Hi Chris, tag:* is a wildcard query while *:* is match all query. I believe that adjusting pure negative is turned on by default so you can safely just use -tag:email and it’ll be translated to *:* -tag:email.
HTH, Emir -- Monitoring - Log Management - Alerting - Anomaly Detection Solr & Elasticsearch Consulting Support Training - http://sematext.com/ > On 14 Jul 2020, at 14:00, Chris Dempsey <cdal...@gmail.com> wrote: > > I'm trying to understand the difference between something like > fq={!cache=false}(tag:* -tag:email) which is very slow compared to > fq={!cache=false}(*:* -tag:email) on Solr 7.7.1. > > I believe in the case of `tag:*` Solr spends some effort to gather all of > the documents that have a value for `tag` and then removes those with > `-tag:email` while in the `*:*` Solr simply uses the document set as-is > and then remove those with `-tag:email` (*and I believe Erick mentioned > there were special optimizations for `*:*`*)?
