Fatal Error Call to undefined function SearchApiViewsQuery():placeholder I am using search api and views module
When I add fields Indexed user first name and indexed user last name
and then use field views combine fields filter and add those two fields I get the undefined function error


Basically I want to add a keyword search option to the views which is using index values of a search api
Is there any other option to implement keyword search in drupal
Have you tried using the Realname module on your site? I'd suggest doing it on a copy of the site to test first as it affects quite a lot of things, but if you're doing searches for names it may help, sounds like search api is getting confused trying to join the two fields, so perhaps a different approach may help.

https://www.drupal.org/project/realname

HTH

Steve