Merging multiple oracle queries to produce one result

Is it possible to execute the followi开发者_StackOverflow社区ng query as one query?

[code]

select count(*) from tableA;
select count(*) from tableB;
select count(*) from tableC;
select count(*) from tableD;

[/code]

ie. the result to be something like this

|TablA|TableB|TableC|TableD|
|50   |300   |30    |9|

Thanks

---

select * from
(select count(*) from tableA),
(select count(*) from tableB),
(select count(*) from tableC),
(select count(*) from tableD);

---

Yes

select count(*) from tableA;
union all
select count(*) from tableB;
union all
select count(*) from tableC;
union all
select count(*) from tableD; 

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Following should work with any DBMS.

SELECT *
FROM   (select count(*) as tableA from tableA) a
       full outer join (select count(*) as tableB from tableB) b
       full outer join (select count(*) as tableC from tableC) c
       full outer join (select count(*) as tableD from tableD) d

---

try this:

with
one as (select count(1) as counterA, 1 as dummy from tableA), two as (select count(1) as counterB, 1 as dummy from tableB), three as (select count(1) as counterC, 1 as dummy from tableC), four as (select count(1) as counterD, 1 as dummy from tableD)

select one.counterA, two.counterB, three.counterC, four.counterD from one, two, three, four where one.dummy = two.dummy and two.dummy = three.dummy and three.dummy = four.dummy;