Incrementing while inserting sql - sql-server

Question

I have a table as below:
Department Date Budget
-----------------------------------
D1 2010-01-01 100
D2 2010-01-01 200
... ... ...
Is there a way to write an insert statement that autoincrements the month and budget for a particular department?
For instance, I want to insert data for 2010 from Jan to Dec for department D1 with increments of 10 each month. So the resultant table should look something like below
Department Date Budget
------------------------------------
D1 2010-01-01 100
D2 2010-01-01 200
D1 2010-02-01 110
D1 2010-03-01 120
D1 2010-04-01 130
... ... ...
I know this can be achieved through some scripting, but is there a way to achieve this through just insert and select statements ?
Using SQL Server (or) Postgres

Answer 1

For Postgres:
insert into the_table (department, "date", budget)
select d.department,
d.date + interval '1 month' * row_number() over (order by g.i),
d.budget + row_number() over (order by g.i) * 10
from the_table d, generate_series(1,11) as g(i)
where d.department = 'D1';
This assumes that at the time when this is run, only a single row exists for department D1

Answer 2

try something like
insert into Table values
('D1',Dateadd(month,1,
(select top 1 Date from Table order by Date Desc)),budget)

Answer 3

using recursive cte
;With cte(Department,[Date], Budget)
AS
(
SELECT 'D1','2010-01-01', 100 UNION ALL
SELECT 'D2','2010-01-01', 200
)
,cte2 AS
(
SELECT 0 AS val ,
0 AS val2
UNION ALL
SELECT val +1,
val2+10
FROM cte2
WHERE val<11 )
INSERT INTO the_table (department, [date], budget)
SELECT department,
[date],
CASE
WHEN rnk=0 THEN budget
ELSE budget+val2
END AS Budget
FROM (
SELECT department,
val2,
Dateadd(month,val,[date])AS [Date],
budget,
Row_number()OVER(PArtition by Department ORDER BY [Date])-1 AS Rnk
FROM Cte2 ,
Cte )dt
WHERE dt.department='D1'
Result
department Date Budget
-------------------------------------------
D1 2010-01-01 00:00:00.000 100
D1 2010-02-01 00:00:00.000 110
D1 2010-03-01 00:00:00.000 120
D1 2010-04-01 00:00:00.000 130
D1 2010-05-01 00:00:00.000 140
D1 2010-06-01 00:00:00.000 150
D1 2010-07-01 00:00:00.000 160
D1 2010-08-01 00:00:00.000 170
D1 2010-09-01 00:00:00.000 180
D1 2010-10-01 00:00:00.000 190
D1 2010-11-01 00:00:00.000 200
D1 2010-12-01 00:00:00.000 210