oracle sql 组合查询问题

SQL code

select (declare  pm_name varchar(20);begin  select name into pm_name from tblsex where type=u.type  dbms_output.put_line(pm_name);  if pm_name = '男' then    select name into pm_name from tblsex where type=u.type  else    --输出'女'  end if;end;) xb,u.*from users u这条SQL有错，如何改为正确？

SQL code

SELECT DECODE(T.JQLY, NULL, NVL(G.GZDMC, '拟制'), '加签') GZDMC, T.*  FROM GWXXB T  LEFT JOIN (SELECT ROW_NUMBER() OVER(PARTITION BY GWID ORDER BY GZDMC) ROW_,                    GWID,                    GZDMC               FROM GWGZD) G    ON T.GWID = G.T.GWID   AND G.ROW_ = 1 WHERE ROWNUM <= 5 ORDER BY ROWNUM ASC;