Combine 2 queries to get data in same row in Oracle - oracle

Question

I have created 2 queries result set is like below:
Query 1:
ID Name Value Choice
1 abc 10 x
2 def 20 x
Query 2:
ID1 Name1 Value1 Choice1
1 eft 10 y
2 bgf 20 y
I have added a full outer join and result set is like
ID Name Value Choice ID1 Name1 Value1 Choice1
1 abc 10 x null null null null
2 def 20 x null null null null
null null null null 1 eft 10 y
null null null null 2 bgf 20 y
But I need like below:
ID Name Value Choice ID1 Name1 Value1 Choice1
1 abc 10 x 1 eft 10 y
2 def 20 x 2 bgf 20 y
Not sure on what join or logic should I use.

Answer 1

Not sure what your FULL JOIN condition looks like. However, if you want to "get records side by side" (as stated in your comment) you could do something like ...
select *
from (
select 1 as id, 'abc' as name, 10 as value, 'x' as choice from dual union all
select 2, 'def', 20, 'x' from dual
) Q1 full outer join (
select 1 as id1, 'eft' as name1, 10 as value1, 'y' as choice1 from dual union all
select 2, 'bgf', 20, 'y' from dual
) Q2
on Q1.id = Q2.id1
;
-- result
ID NAME VALUE CHOICE ID1 NAME1 VALUE1 CHOICE1
1 abc 10 x 1 eft 10 y
2 def 20 x 2 bgf 20 y
That, of course will give you some NULLs for IDs that don't "match". Eg (same join, data different)
select *
from (
select 1 as id, 'abc' as name, 10 as value, 'x' as choice from dual union all
select 2, 'def', 20, 'x' from dual union all
select 4, '_4_', 40, 'g' from dual
) Q1 full outer join (
select 1 as id1, 'eft' as name1, 10 as value1, 'y' as choice1 from dual union all
select 2, 'bgf', 20, 'y' from dual union all
select 5, '_5_', 50, 'z' from dual
) Q2
on Q1.id = Q2.id1
;
ID NAME VALUE CHOICE ID1 NAME1 VALUE1 CHOICE1
1 abc 10 x 1 eft 10 y
2 def 20 x 2 bgf 20 y
NULL NULL NULL NULL 5 _5_ 50 z
4 _4_ 40 g NULL NULL NULL NULL
Ponder Stibbon's (thank you!) suggested solution, would probably remove some of the NULLs, but you may end up having records with different IDs in some of the resultset's rows.
select *
from (
select id, name, value, choice, rownum row_
from (
select 1 as id, 'abc' as name, 10 as value, 'x' as choice from dual union all
select 2, 'def', 20, 'x' from dual union all
select 4, '_4_', 40, 'g' from dual
)
) Q1 full join (
select id1, name1, value1, choice1, rownum row_
from (
select 1 as id1, 'eft' as name1, 10 as value1, 'y' as choice1 from dual union all
select 2, 'bgf', 20, 'y' from dual union all
select 5, '_5_', 50, 'z' from dual
)
) Q2 on Q1.row_ = Q2.row_
;
-- result
ID NAME VALUE CHOICE ROW_ ID1 NAME1 VALUE1 CHOICE1 ROW_
1 abc 10 x 1 1 eft 10 y 1
2 def 20 x 2 2 bgf 20 y 2
4 _4_ 40 g 3 5 _5_ 50 z 3

Answer 2

You never showed us your original two queries, but I will assume that we can just wrap them as CTEs. Given that, what you seem to need here is actually an inner join, not a full outer join:
WITH cte1 AS (
-- first query
),
cte2 AS (
-- second query
)
SELECT t1.ID, t1.Name, t1."Value", t1.Choice, t2.ID1, t2.Name1, t2.Value1, t2.Choice1
FROM cte2 t1
INNER JOIN cte2 t2
ON t1.ID = t2.ID1;