旧样式到新样式的联接转换

请考虑以下代码:

select (some columns)
from efdan_setup a,crit_efdan_val b,efdan c
where a.dan *= c.code
and b.codef *= c.codef
and b.mhnmis *= c.mhnmis
and b.etmis *= c.etmis
and b.ebdmis *= c.ebdmis
and b.mhnet *= c.mhnet
and b.mhnet_plir *= c.mhnet_plir

我不太熟悉老式的连接方式,我已经读了足够多的内容来理解我应该改变这一点。我想知道哪一种是新样式的等边三角形。我猜想:

from 
    crit_efdan_val b
    left join efdan c on 
        b.codef = c.codef 
        and b.mhnmis = c.mhnmis 
        and b.etmis = c.etmis 
        and b.ebdmis = c.ebdmis 
        and b.mhnet = c.mhnet
        and b.mhnet_plir = c.mhnet_plir
    right join fdan_setup a on a.dan = c.code