Query joined partitioned tables - oracle

Question

I have 2 partitioned tables . I want to left joined them it means that i want all record of table 'A' that is in specific date , and data in table 'B' if there is any matched record (also in specific date). both tables are partitioned so i use partitioned column (time) in where clause , but in this query when there is not any matched record in table 'B' , the condition 'B.time' become null and the records of table 'A' dose not appear in result.
if I do not use time condition for table 'B', the execution plan of it become partition range all and has bad performance .
how can i edit the query?
select * from A left outer join B SSRESP
on A.ID = B.A_ID where
A.time >= to_date('1396/09/26 00:00:00',
'yyyy/mm/dd hh24:mi:ss',
'NLS_CALENDAR=persian')
and A.time <= to_date('1396/10/27 11:00:00',
'yyyy/mm/dd hh24:mi:ss',
'NLS_CALENDAR=persian')
and B.time >=
to_date('1396/09/26 00:00:00',
'yyyy/mm/dd hh24:mi:ss',
'NLS_CALENDAR=persian')
and B.time <=
to_date('1396/10/27 11:00:00',
'yyyy/mm/dd hh24:mi:ss',
'NLS_CALENDAR=persian')

Answer 1

There are 2 possibilities.
1) Move the condition to the on-clause:
select *
from A
left outer join B
on A.ID = B.A_ID
and B.time >= to_date('1396/09/26 00:00:00',
'yyyy/mm/dd hh24:mi:ss',
'NLS_CALENDAR=persian')
and B.time <= to_date('1396/10/27 11:00:00',
'yyyy/mm/dd hh24:mi:ss',
'NLS_CALENDAR=persian')
where A.time >= to_date('1396/09/26 00:00:00',
'yyyy/mm/dd hh24:mi:ss',
'NLS_CALENDAR=persian')
and A.time <= to_date('1396/10/27 11:00:00',
'yyyy/mm/dd hh24:mi:ss',
'NLS_CALENDAR=persian')
2) Filter the table before the left join:
select *
from A
left outer join
(SELECT * FROM B
WHERE B.time >= to_date('1396/09/26 00:00:00',
'yyyy/mm/dd hh24:mi:ss',
'NLS_CALENDAR=persian')
and B.time <= to_date('1396/10/27 11:00:00',
'yyyy/mm/dd hh24:mi:ss',
'NLS_CALENDAR=persian')) AS B
on A.ID = B.A_ID
where A.time >= to_date('1396/09/26 00:00:00',
'yyyy/mm/dd hh24:mi:ss',
'NLS_CALENDAR=persian')
and A.time <= to_date('1396/10/27 11:00:00',
'yyyy/mm/dd hh24:mi:ss',
'NLS_CALENDAR=persian')