Oracle SQL: Combine list of char with values - sql

Question

In Oracle SQL, I want to create a view.
In Column 1, it should have a distinct list of chars.
select distinct *name* from view1
--> name1
name2
name3
name4...
Now in the second column, there should be numbers, which depend on this number:
select max(number) number_max from view2
--> 17
Now I want the second column to be ascending, depending on that number. The list of numbers for each name. The table should look like:
name1 18 ->(number_max+1)
name1 19 ->(number_max+2)
name1 20
name2 18
name2 19
name2 20
name3 18
....
How do I do this? Thank you so much!

Answer 1

This is how I understood it:
Sample data (your views, view1 and view2, simplified):
SQL> with
2 view1 (name) as
3 (select 'name1' from dual union all
4 select 'name1' from dual union all
5 select 'name1' from dual union all
6 select 'name2' from dual union all
7 select 'name3' from dual union all
8 select 'name3' from dual
9 ),
10 view2 (c_number) as
11 (select 15 from dual union all
12 select 17 from dual
13 )
14 --
Query begins here; subquery that is cross-joined to view1 just fetches the maximum number column value which is then added to result of the row_number analytic function that partitions data per each name:
15 select
16 a.name as col1,
17 row_number() over (partition by a.name order by null) + b.number_max as col2
18 from view1 a cross join (select max(c_number) number_max from view2) b
19 order by 1, 2;
COL1 COL2
----- ----------
name1 18
name1 19
name1 20
name2 18
name3 18
name3 19
6 rows selected.
SQL>

Answer 2

You can use GROUP BY name to find the DISTINCT names and find the maximum maximum by nesting an MAX aggregation function inside a MAX analytic function and then CROSS JOIN to a row-generator.
For example, if you wanted 3 rows for each name:
SELECT m.name,
m.number_max + l.value AS value
FROM ( SELECT name,
MAX(MAX("NUMBER")) OVER () AS number_max
FROM table_name
GROUP BY name
) m
CROSS JOIN (
SELECT LEVEL AS value FROM DUAL CONNECT BY LEVEL <= 3
) l;
Which, if you have the sample data:
CREATE TABLE table_name (name, "NUMBER") AS
SELECT 'name1', 17 FROM DUAL UNION ALL
SELECT 'name1', 1 FROM DUAL UNION ALL
SELECT 'name1', 7 FROM DUAL UNION ALL
SELECT 'name2', 15 FROM DUAL UNION ALL
SELECT 'name2', 15 FROM DUAL UNION ALL
SELECT 'name3', 5 FROM DUAL UNION ALL
SELECT 'name3', 7 FROM DUAL UNION ALL
SELECT 'name4', 2 FROM DUAL UNION ALL
SELECT 'name4', 1 FROM DUAL;
Outputs:
NAME
VALUE
name1
18
name2
18
name3
18
name4
18
name1
19
name2
19
name3
19
name4
19
name1
20
name2
20
name3
20
name4
20
db<>fiddle here