php无关联表查询排序分页

	$data=Db::table('fa_caselistsx')
  ->union('SELECT * FROM fa_caselistyw')
  ->union('SELECT * FROM fa_caselistyy')
  ->union('SELECT * FROM fa_caselistyy')
  ->union('SELECT * FROM fa_caselistyyue')
  ->union('SELECT * FROM fa_caselistty')
  ->union('SELECT * FROM fa_caselistms')
  ->union('SELECT * FROM fa_caselistkx')
  ->union('SELECT * FROM fa_caselistddyfz')
  ->union('SELECT * FROM  fa_caselistpdysh')
  ->union('SELECT * FROM fa_caselistzhsj')
  ->union('SELECT * FROM  fa_caselistxxjs')
  ->order('id desc')->buildSql();
	$list = Db::table($data.' as  a')
    ->paginate(7,false,['query'=>request()->param()]);