uname -a
Linux XXXX 2.4.21-27.ELsmp #1 SMP Wed Dec 1 21:59:02 EST 2004 i686 i686
i386 GNU/Linux
db2level
DB21085I Instance "vhsinst" uses "32" bits and DB2 code release
"SQL08022"
with level identifier "03030106".
Informational tokens are "DB2 v8.1.0.89", "OD_14086", "MI00105_14086",
and
FixPak "9".
Product is installed at "/opt/IBM/db2/V8.1".
Greetings, I got a query that gives different results dependent of the
number of columns in the select part. I will report this to IBM, just
curious if anyone has a good explanation how this can happen
select a.* from nya.APPLICATION a
INNER JOIN nya.PERSON p
on a.person_id = p.person_id
INNER JOIN nya.INTERIM_PERSON ip
on a.person_id = ip.person_id
LEFT OUTER JOIN nya.PERSON_ADDRESS pa
on pa.person_id = a.person_id
and addresstype_id = '2'
WHERE a.admissionround_id = 'VT2006'
AND p.deceased = 0
[...]
745 record(s) selected.
but if I add pa.addresstype_id in the select clause, I only get one row
select a.*, pa.addresstype_id from nya.APPLICATION a
INNER JOIN nya.PERSON p
on a.person_id = p.person_id
INNER JOIN nya.INTERIM_PERSON ip
on a.person_id = ip.person_id
LEFT OUTER JOIN nya.PERSON_ADDRESS pa
on pa.person_id = a.person_id
and addresstype_id = '2'
WHERE a.admissionround_id = 'VT2006'
AND p.deceased = 0
[...]
1 record(s) selected.
Furthermore, if I move the deceased predicate to the join condition I
get the 745 rows again.
select a.*, pa.addresstype_id from nya.APPLICATION a
INNER JOIN nya.PERSON p
on a.person_id = p.person_id
AND p.deceased = 0
INNER JOIN nya.INTERIM_PERSON ip
on a.person_id = ip.person_id
LEFT OUTER JOIN nya.PERSON_ADDRESS pa
on pa.person_id = a.person_id
and addresstype_id = '2'
WHERE a.admissionround_id = 'VT2006'
[...]
745 record(s) selected.
Any ideas anyone? This is puzzling me, at first I thought that there
might be a corrupt index or something, but all look fine, and there is
no info in the db2diag.log
Kind regards
/Lennart 1 1393 le*****@kommunicera.umea.se wrote: uname -a Linux XXXX 2.4.21-27.ELsmp #1 SMP Wed Dec 1 21:59:02 EST 2004 i686 i686 i386 GNU/Linux
db2level DB21085I Instance "vhsinst" uses "32" bits and DB2 code release "SQL08022" with level identifier "03030106". Informational tokens are "DB2 v8.1.0.89", "OD_14086", "MI00105_14086", and FixPak "9". Product is installed at "/opt/IBM/db2/V8.1".
Greetings, I got a query that gives different results dependent of the number of columns in the select part. I will report this to IBM, just curious if anyone has a good explanation how this can happen
select a.* from nya.APPLICATION a INNER JOIN nya.PERSON p on a.person_id = p.person_id INNER JOIN nya.INTERIM_PERSON ip on a.person_id = ip.person_id LEFT OUTER JOIN nya.PERSON_ADDRESS pa on pa.person_id = a.person_id and addresstype_id = '2' WHERE a.admissionround_id = 'VT2006' AND p.deceased = 0 [...] 745 record(s) selected.
but if I add pa.addresstype_id in the select clause, I only get one row
select a.*, pa.addresstype_id from nya.APPLICATION a INNER JOIN nya.PERSON p on a.person_id = p.person_id INNER JOIN nya.INTERIM_PERSON ip on a.person_id = ip.person_id LEFT OUTER JOIN nya.PERSON_ADDRESS pa on pa.person_id = a.person_id and addresstype_id = '2' WHERE a.admissionround_id = 'VT2006' AND p.deceased = 0 [...] 1 record(s) selected.
Furthermore, if I move the deceased predicate to the join condition I get the 745 rows again.
select a.*, pa.addresstype_id from nya.APPLICATION a INNER JOIN nya.PERSON p on a.person_id = p.person_id AND p.deceased = 0 INNER JOIN nya.INTERIM_PERSON ip on a.person_id = ip.person_id LEFT OUTER JOIN nya.PERSON_ADDRESS pa on pa.person_id = a.person_id and addresstype_id = '2' WHERE a.admissionround_id = 'VT2006' [...] 745 record(s) selected.
Any ideas anyone? This is puzzling me, at first I thought that there might be a corrupt index or something, but all look fine, and there is no info in the db2diag.log
Kind regards /Lennart
Please open a PMR.
--
Serge Rielau
DB2 SQL Compiler Development
IBM Toronto Lab This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics
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