wm_concat实例 行转列

create table wlbtest1(   username varchar2(2),   deptID number);create table wlbtest2(   deptName varchar2(10),   deptID number);insert into wlbtest1 values ('a', 1);insert into wlbtest1 values ('b', 1);insert into wlbtest1 values ('c', 1);insert into wlbtest1 values ('d', 2);insert into wlbtest1 values ('e', 2);insert into wlbtest1 values ('f', 2);insert into wlbtest2 values ( '部门1' ,1);insert into wlbtest2 values ( '部门2', 2);select deptID, wm_concat(username) username,'部门'||deptID deptName from wlbtest1 group by deptID 

执行结果：