prefix . 'link_checkup_links'; } public function uses(): string { return $this->prefix . 'link_checkup_uses'; } public function fixes(): string { return $this->prefix . 'link_checkup_fixes'; } public function link_columns(): string { return 'links.*, (SELECT COUNT(*) FROM ' . $this->uses() . ' uses WHERE uses.link_id = links.id) AS uses_count'; } }