Oracle - return multiple counts as one query

Question

I have a couple of queries, detailed below. I\'d like to be able to run one SQL query which returns both counts, is this possible?

1.

select nvl(count(ro         


        

Answer 1

You could use a with statement:

with
count1 as (
select ...
),
count2 as (
select ...
)
select tot1, tot2
from count1, count2

Answer 2

If you need them in a single row:

SELECT
    COUNT(CASE OPP WHEN 'FOO' THEN 1 END),
    COUNT(CASE OPP WHEN 'BAR' THEN 1 END)
FROM tablename
WHERE OPP IN ('FOO', 'BAR') AND date = 'BAZ'

(The GROUP BY approach by Thilo is a better generic solution anyway.)

Edit: I've removed NVL(). I had forgotten why I never use it.

Answer 3

If the condition really looks like that (same table, only one field different in the groups):

select opp, count(*) from tablename
where date = 'BAZ'
group by opp
having opp in ('FOO', 'BAR');

For arbitrary queries:

select 'A', count(*) from tableA
union all
select 'B', count(*) from tableB