select *
                      from jcj_jjxx, dm_jqlb jqlb, dm_qx
                     where bjlx = jqlb.jqlb_dm(+)-- + 号啥意思？
                       and substr(jjxzqh, 1, 6) = qx_dm) jjxx on cjxx.jjbh =
                                                                 jjxx.jjbh