Query with subquery containing group clause doesn't return any rows - WHY ?

[amasny]

Hi,

My query doesn't return any values :

select g1.NTRX from gtrx g1
where exists
(SELECT b.cfunctrx, b.cpro1trx, b.nmsgitrx, b.nmrc, b.ncrd, b.namtstrx,
b.dltimtrx, b.nrtrftrx,count(*)
FROM gtrxacq a, gtrx b
WHERE a.ntrx = b.ntrx AND a.acq_bus_date = (SELECT curr_bus_date -1
FROM gmbr
WHERE nmbr = 0)
and g1.NTRX=b.NTRX
GROUP BY b.cfunctrx,
b.cpro1trx,
b.nmsgitrx,
b.nmrc,
b.ncrd,
b.namtstrx,
b.dltimtrx,
b.nrtrftrx
HAVING COUNT (*) > 1);

--------------------

but such query returns some number of rows :

SELECT b.cfunctrx, b.cpro1trx, b.nmsgitrx, b.nmrc, b.ncrd, b.namtstrx,
b.dltimtrx, b.nrtrftrx,count(*)
FROM gtrxacq a, gtrx b
WHERE a.ntrx = b.ntrx AND a.acq_bus_date = (SELECT curr_bus_date -1
FROM gmbr
WHERE nmbr = 0)
/*and g1.NTRX=b.NTRX*/
GROUP BY b.cfunctrx,
b.cpro1trx,
b.nmsgitrx,
b.nmrc,
b.ncrd,
b.namtstrx,
b.dltimtrx,
b.nrtrftrx
HAVING COUNT (*) > 1


AND when i put results from query above into query :

select g1.NTRX from gtrx g1
where
g1.CFUNCTRX= 200 and g1.CPRO1TRX= 000 and g1.NMSGITRX= 1240 and
g1.NMRC= '000000000000675' and g1.NCRD= 405671**********
and g1.NAMTSTRX=14.26 and g1.DLTIMTRX=to_date('07/08/2008 15:07:02','MM/DD/YYYY HH24:MI:SS')
and g1.NRTRFTRX= '000414598393';

it returns values.

what is wrong ?

Best Regards Arkadiusz Masny

[jyothsna1612]

Please post the structure of the table