我想将下面的联合查询转换为 laravel 查询
DB::select("select lead_master.lead_stage from lead_master inner join user_master on
user_master.user_name=lead_master.assigned_user_name where region in (".$geo_string.") and teams
in (".$filter_teams_string.") group by (lead_stage) union
select meeting_hash from meetings_master where assigned_user_name in
(".$filter_username_string.") and meeting_hash in ('follow_up','first_time') group by
(meeting_hash)
union
select sales_stage from opportunity_master where sales_stage in ('Identified','QO_to be
approved') and assigned_user in (".$filter_username_string.") group by (sales_stage)");
以下查询在 postgre 中正常运行
白猪掌柜的