create table l as
select 'left_1' as str,'1' as v from dual union all
select 'left_2' ,'2' as v from dual union all
select 'left_3' ,'3' as v from dual union all
select 'left_4' ,'4' as v from dual ;

create table r as
select 'right_3' as str,'3' as v, 1  as status from dual union all
select 'right_4' as str,'4' as v, 0  as status from dual union all
select 'right_5' as str,'5' as v, 0  as status from dual union all
select 'right_6' as str,'6' as v, 0  as status from dual ;

select * from l; --where l.v not in (select r.v from r )

select * from r

返回两表相匹配的数据  即 交集
select l.str as left_str,r.str as right_str from l
inner join r on l.v=r.v
order by 1,2;

select l.str as left_str,r.str rigth_str from l,r
where l.v=r.v
order by 1,2;

左表为主表，左表返回全部数据，右表只返回与左表相匹配的数据
select l.str as left_str,r.str right_str from l
left join r on l.v=r.v
order by 1,2;

select l.str as left_str,r.str as right_str from l,r
where l.v=r.v(+)
order by 1,2;

select l.str as left_str,r.str as right_str from l,r
where l.v=r.v
order by 1,2;
 

右表为主表，左表只返回与右表相匹配的数据
select l.str as left_str,r.str as right_str from l
right join r on l.v=r.v
order by 1,2;

select l.str as left_str,r.str right_str from l,r
where l.v(+)=r.v
order by 1,2;

左右表均返回全部的数据，但是只有相匹配的数据显示在一行，非匹配的数据只显示一个表的数据
select l.str as left_str,r.str as right_str from l
full join r on r.v=l.v
order by 1,2;

5.1全部结果集  106

select   t1.fpdm,t1.fphm ,t1.zjr,t1.zjsj,t1.zjjx,t1.zjje,t1.zflx,t1.zfid,t2.fphm,t2.zflx  from yw_zjfpjl t1

full join xxdzmx t2  on t2.fpdm=t1.fpdm and t2.fphm=t1.fphm

5.2右边有左边没有   10-1=9

select   t1.fpdm,t1.fphm ,t1.zjr,t1.zjsj,t1.zjjx,t1.zjje,t1.zflx,t1.zfid,t2.fphm,t2.fpdm,t2.zflx,t2.dzyf  from yw_zjfpjl t1

full join xxdzmx t2  on t2.fphm||t2.fpDm = t1.fphm||t1.fpdm

where t2.fphm is not  null and t2.zflx =0 and substr(t2.dzyf,1 ,4)||'-'||substr(t2.dzyf,5,2)='2016-10'  ;

5.3左边有右边没有   97-1=96

select   t1.fpdm,t1.fphm ,t1.zjr,t1.zjsj,t1.zjjx,t1.zjje,t1.zflx,t1.zfid,t2.fphm,t2.fpdm,t2.zflx  from yw_zjfpjl t1

full join xxdzmx t2  on t2.fphm||t2.fpDm = t1.fphm||t1.fpdm

where  (t1.zflx='0' and TO_CHAR(t1.zjsj,'YYYY-MM')='2016-10'  );

5.4左边有右边没有  右边有左边没有  （97-1）+（10-1）=105

select   t1.fpdm,t1.fphm ,t1.zjr,t1.zjsj,t1.zjjx,t1.zjje,t1.zflx,t1.zfid,t2.fphm,t2.fpdm,t2.zflx,t2.dzyf  from yw_zjfpjl t1

full join xxdzmx t2  on t2.fphm||t2.fpDm = t1.fphm||t1.fpdm

where (t2.fphm is not  null and t2.zflx ='0' and substr(t2.dzyf,1 ,4)||'-'||substr(t2.dzyf,5,2)='2016-10') or (t1.zflx='0' and TO_CHAR(t1.zjsj,'YYYY-MM')='2016-10'  );

5.5 inner join  交集=1

select   t1.fpdm,t1.fphm ,t1.zjr,t1.zjsj,t1.zjjx,t1.zjje,t1.zflx,t1.zfid, t2.fphm,t2.fpdm,t2.zflx  from yw_zjfpjl t1

inner join xxdzmx t2  on t2.fphm||t2.fpDm = t1.fphm||t1.fpdm

where t2.fphm is not null and t2.zflx='0' and t1.zflx='0' and TO_CHAR(t1.zjsj,'YYYY-MM')='2016-10'  and substr(t2.dzyf, 0, 4)||'-'||substr(t2.dzyf, 5, 2)='2016-10';