* Add support for postgres schema
* wip
* Apply fixes from StyleCI
* revert to db as default for pgsql
* Move separate_by to database
* Fixing testing
* Fixing style
* Reverted change
* Store string instead of Connection instance
* Remove use statement
* Add use statement for DB facade
* mysql -> pgsql
Co-authored-by: Samuel Štancl <samuel.stancl@gmail.com>
