Weird behaviour: join of a table with a view

Question

Hello,
I'm evaluating Oracle 10g for the migration of an application currently running on
Oracle 8i and I found a query that doesn't work as expected on the new release.
The query is very simple and uses a table "T_Programm" and a view "V_Adresse".
The column "Id" is the primary key of "T_Programm" and of type number, the other
columns are varchar2.
First I tried this:
SELECT P.Id, A.Schluessel, P.Absender
FROM V_Adresse A,T_Programm P
WHERE A.Schluessel=P.Absender;
with the following expected result:
ID SCHLUESSEL ABSENDER
10020 BZV BZV
10000 BZV BZV
1 BZV BZV
But with the follwing query there are no results:
SELECT P.Id, A.Schluessel, P.Absender
FROM V_Adresse A, T_Programm P
WHERE A.Schluessel=P.Absender
AND P.Id=10020;
Just for fun I tried another query:
SELECT P.Id, A.Schluessel, P.Absender
FROM V_Adresse A, T_Programm P
WHERE A.Schluessel=P.Absender
AND P.Id>10019 AND P.Id<10021;
and I got the expected result:
ID SCHLUESSEL ABSENDER
10020 BZV BZV
On the Oracle 8i with the same data there was no problem.
Maybe there is something wrong with the index or the query optimizer?!?
Is there any idea?
thank you in advance
Stephan

Answer 1

Hello,
the column and table names are in german, I hope that's not a problem.
best regards
Stephan
Here are the describes:
Table T_Programm:
Name Null? Typ
ID NOT NULL NUMBER(12)
JAHRID NUMBER(12)
TITELID NUMBER(12)
WAEHRUNGID NUMBER(12)
TYP VARCHAR2(4)
KREDITORENKONTO VARCHAR2(32)
DEBITORENKONTO VARCHAR2(32)
BANKNAME VARCHAR2(256)
BANKLEITZAHL VARCHAR2(32)
KONTONUMMER VARCHAR2(32)
UNTERSCHRIFT1 VARCHAR2(1024)
UNTERSCHRIFT2 VARCHAR2(1024)
UNTERSCHRIFT3 VARCHAR2(1024)
UNTERSCHRIFT4 VARCHAR2(1024)
EMSATZ NUMBER(5,2)
BMSATZ NUMBER(5,2)
SZSATZ NUMBER(5,2)
VEDATUM DATE
VEBETRAG VARCHAR2(256)
BRIEFKOPF VARCHAR2(256)
GRUSSZEILE VARCHAR2(256)
TITEL_KURZ VARCHAR2(256)
TITEL_LANG VARCHAR2(1024)
ABSENDER VARCHAR2(32)
View V_Adresse:
Name Null? Typ
MANDANTID NUMBER
SCHLUESSEL VARCHAR2(32)
P_ANREDE1 VARCHAR2(16)
P_ANREDE2A VARCHAR2(16)
P_ANREDE2B VARCHAR2(16)
P_POSITION VARCHAR2(32)
P_TITEL VARCHAR2(32)
P_VORNAME VARCHAR2(32)
P_NACHNAME VARCHAR2(32)
P_ABTEILUNG VARCHAR2(64)
P_TELEFON VARCHAR2(32)
P_TELEFAX VARCHAR2(32)
P_EMAIL VARCHAR2(64)
P_INTERNET VARCHAR2(64)
P_ANMERKUNG VARCHAR2(1024)
O_KUERZEL VARCHAR2(32)
O_ARTIKELA VARCHAR2(16)
O_ZEILE1A VARCHAR2(64)
O_ARTIKELB VARCHAR2(16)
O_ZEILE1B VARCHAR2(64)
O_ZEILE1 VARCHAR2(64)
O_ZEILE2 VARCHAR2(64)
O_ZEILE3 VARCHAR2(64)
O_POSTFACH VARCHAR2(16)
O_PLZPOSTFACH VARCHAR2(16)
O_STRASSE VARCHAR2(64)
O_PLZSTRASSE VARCHAR2(16)
O_ORT VARCHAR2(64)
O_TELEFON VARCHAR2(32)
O_TELEFAX VARCHAR2(32)
O_EMAIL VARCHAR2(64)
O_INTERNET VARCHAR2(64)
Here is the view statement:
CREATE VIEW V_Adresse AS
SELECT
1 AS MandantId,
P.Name AS Schluessel,
P.Anrede1 AS P_Anrede1,
P.Anrede2a AS P_Anrede2a,
P.Anrede2b AS P_Anrede2b,
P.Position AS P_Position,
P.Titel AS P_Titel,
P.Vorname AS P_Vorname,
P.Nachname AS P_Nachname,
P.Abteilung AS P_Abteilung,
P.Telefon AS P_Telefon,
P.Telefax AS P_Telefax,
P.Email AS P_Email,
P.Internet AS P_Internet,
P.Anmerkung AS P_Anmerkung,
O.Name AS O_Kuerzel,
O.Artikela AS O_Artikela,
O.Zeile1a AS O_Zeile1a,
O.Artikelb AS O_Artikelb,
O.Zeile1b AS O_Zeile1b,
O.Zeile1 AS O_Zeile1,
O.Zeile2 AS O_Zeile2,
O.Zeile3 AS O_Zeile3,
O.Postfach AS O_Postfach,
O.PLZPostfach AS O_PLZPostfach,
O.Strasse AS O_Strasse,
O.PLZStrasse AS O_PLZStrasse,
O.Ort AS O_Ort,
O.Telefon AS O_Telefon,
O.Telefax AS O_Telefax,
O.Email AS O_Email,
O.Internet AS O_Internet
FROM
T_Organisation O,
T_Person P
WHERE
O.Id=P.OrganisationId
UNION
SELECT
1 AS MandantId,
O.Name AS Schluessel,
'' AS P_Anrede1,
'' AS P_Anrede2a,
'' AS P_Anrede2b,
'' AS P_Position,
'' AS P_Titel,
'' AS P_Vorname,
'' AS P_Nachname,
'' AS P_Abteilung,
'' AS P_Telefon,
'' AS P_Telefax,
'' AS P_Email,
'' AS P_Internet,
'' AS P_Anmerkung,
O.Name AS O_Kuerzel,
O.Artikela AS O_Artikela,
O.Zeile1a AS O_Zeile1a,
O.Artikelb AS O_Artikelb,
O.Zeile1b AS O_Zeile1b,
O.Zeile1 AS O_Zeile1,
O.Zeile2 AS O_Zeile2,
O.Zeile3 AS O_Zeile3,
O.Postfach AS O_Postfach,
O.PLZPostfach AS O_PLZPostfach,
O.Strasse AS O_Strasse,
O.PLZStrasse AS O_PLZStrasse,
O.Ort AS O_Ort,
O.Telefon AS O_Telefon,
O.Telefax AS O_Telefax,
O.Email AS O_Email,
O.Internet AS O_Internet
FROM
T_Organisation O;