之前居然从来没见到过此类写法,诸如
select * from t_spolicy d,V_POLICYEMPLOYEE g where d.policyno = g.policyno(+)
查阅相关资料才发现此法就是外联的另外一种表现形式其等同于
select * from t_spolicy d left join V_POLICYEMPLOYEE g on d.policyno = g.policyno,
同理 select * from t_spolicy d,V_POLICYEMPLOYEE g where d.policyno(+) = g.policyno,
就等同于select * from t_spolicy d right join V_POLICYEMPLOYEE g on d.policyno = g.policyno