zhangjingyu 
继续测试，成功执行！
显示行 0 - 29 (104 总计, 查询花费 0.0035 秒)
“SELECT * FROM pw_elements WHERE TYPE ='usersort' and mark in('monthpost','todaypost','onlinetime','money','postnum','rvrc','digests') order by instr('monthpost,todaypost,onlinetime,money,postnum,rvrc,digests',mark),value desc”（引用内容）看来随意指定顺序是差不多可行了！