oracle学习笔记(行转列列转行)

select max(substr(SYS_CONNECT_BY_PATH(COLUMN_NAME, ','), 2))
          into m_col
          from (select decode(UPPER(COLUMN_NAME),'ID','AAID',COLUMN_NAME) as COLUMN_NAME,column_id
                  from dba_tab_columns
                 where table_name = UPPER(m_tabname))
         start with column_id = 1
        connect by column_id = rownum;
       ---取得VALUE列名 除ＩＤ
        m_col:=replace(m_col,'AAID,','');
        m_col:=replace(m_col,'MAIN_ID,','');
          ---新增该表记录(明细)复制
         m_sql := 'insert into '||m_tabname||'  select grua_sequent.nextval,'||m_mainid||',' || m_col ||' from '||m_tabname||' where  main_id='||i_grua_id;
          execute immediate m_sql ;
          commit;