I have a number of tables with values I need to sum up. They are not linked either, but the order is the same across all the tables.
Basically, I would like to take this two tables:
CASH TABLE
London 540
France 240
Belgium 340
CHEQUE TABLE
London 780
France 490
Belgium 230
To get an output like this to feed into a graphing application:
London 1320
France 730
Belgium 570
For your current structure, you could also try the following:
select cash.Country, cash.Value, cheque.Value, cash.Value + cheque.Value as [Total]
from Cash
join Cheque
on cash.Country = cheque.Country
I think I prefer a union between the two tables, and a group by on the country name as mentioned above.
But I would also recommend normalising your tables. Ideally you'd have a country table, with Id and Name, and a payments table with: CountryId (FK to countries), Total, Type (cash/cheque)
you can also try this in sql-server !!
select a.city,a.total + b.total as mytotal from [dbo].[cash] a join [dbo].[cheque] b on a.city=b.city
or try using sum,union
select sum(total) as mytotal,city
from
(
select * from cash union
select * from cheque
) as vij
group by city
SELECT (SELECT COALESCE(SUM(London), 0) FROM CASH) + (SELECT COALESCE(SUM(London), 0) FROM CHEQUE) as result
'And so on and so forth.
"The COALESCE function basically says "return the first parameter, unless it's null in which case return the second parameter" - It's quite handy in these scenarios." Source
Source: Stackoverflow.com