About table join

i have 2 tables in my report.
table A: group-id, item-id, name, ...
table B: group-id, item-id, detail-id, name, ...
i want to join the 2 table using group-id & item-id.
i tried but the join result is not correct, it looks like only joint on 1 column.
does crystal report support this kind of join?
how can i define the joint condition:
- tableA.group-id = tableB.group-id and tableA.item-id = tableB.item-id
- tableA.group-id = tableB.group-id or tableA.item-id = tableB.item-id
it seems there is no way to specify the "and", "or".
thanks in advance

Hello,
Yes CR should allow this unless the DB driver you are using does not support it.
Older DB drivers may not support mutliple joins.
I assume also that you are dragging the field from Table A to Table B and then right clicking on the link and selecting the join type?
What DB are you using and how are you connecting, ODBC, OLE DB, native or ????
What you can do is create the SQL outside of CR and then as a test use a Command and paste in your SQL. If this works then you should be able to do the same in the database expert Linking options.
Thank you
Don
Edited by: Don Williams on Sep 23, 2009 7:26 AM

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plz send me some notes or coding.
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                                                          your regrads
                                                                divya.

hi
use this links
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http://help.sap.com/erp2005_ehp_03/helpdata/EN/0f/49bd6a5d5049edba7b3afe6c7956e3/frameset.htm
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David
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I am porting from MySQL to Oracle 8i. I have a three Table Join in MySQL as follows:
select distinct TO_DAYS(l.listend)-TO_DAYS(NOW()) AS daysLeft, i.minbid, l.listend, i.itemid, i.itemtitle, l.listingid, l.lendstart, l.lendend, l.status, MAX(b.amount) AS curBid, COUNT(b.amount) AS numBids from TBL_ITEMS i, TBL_LISTING l LEFT JOIN TBL_BIDS b ON l.listingid=b.listingid where i.itemid = l.itemid AND l.status='1' AND (TO_DAYS(l.listend)-TO_DAYS(NOW()) >= 0) AND i.catcode LIKE'12__' GROUP BY listingid order by curBid DESC, daysLeft;
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I really appreciate anyone's input. Thanks,
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WORK AROUND:
FIRST STEP:
"create TABLE BIDSUM as
select l.listingid, COUNT(b.amount) numBids, MAX(b.amount) curBid from TBL_LISTING l, TBL_BIDS b where l.listingid=b.listingid(+) group by (l.listingid);"
NEXT STEP:
select i.minbid, i.itemtitle, l.lendstart-TRUNC(SYSDATE), l.lendend, l.listingid, l.status, s.numbids, s.curbid from TBL_ITEMS i, TBL_LISTING l, BIDSUM s where l.listingid=s.listingid AND i.itemid=l.itemid AND l.status='1' AND i.catcode LIKE '12%';
THIS ALSO WORKS (no LIKE):
"select i.minbid, i.itemtitle, l.lendstart-TRUNC(SYSDATE) daysLeft, l.lendend, l.listingid, l.status, s.numbids, s.curbid from TBL_ITEMS i, TBL_LISTING l, BIDSUM s where l.listingid=s.listingid AND i.itemid=l.itemid AND l.status='1' AND i.catcode='12'";
BUT THIS DOES NOT (alias the DATE arimetic)
select i.minbid, i.itemtitle, l.lendstart-TRUNC(SYSDATE) daysLeft, l.lendend, l.listingid, l.status, s.numbids, s.curbid from TBL_ITEMS i, TBL_LISTING l, BIDSUM s where l.listingid=s.listingid AND i.itemid=l.itemid AND l.status='1' AND i.catcode LIKE '12__';

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select distinct TO_DAYS(l.listend)-TO_DAYS(NOW()) AS daysLeft, i.minbid, l.listend, i.itemid, i.itemtitle, l.listingid, l.lendstart, l.lendend, l.status, MAX(b.amount) AS curBid, COUNT(b.amount) AS numBids from TBL_ITEMS i, TBL_LISTING l LEFT JOIN TBL_BIDS b ON l.listingid=b.listingid where i.itemid = l.itemid AND l.status='1' AND (TO_DAYS(l.listend)-TO_DAYS(NOW()) >= 0) AND i.catcode LIKE'12__' GROUP BY listingid order by curBid DESC, daysLeft;
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I have tried to reconstruct this type of call in Oracle and have failed. Several problems that I have notices: Oracle does not let me pull in additional columns when doing a GROUP BY clause.
(see below for my work around)
I have worked around the problem by creating a TABLE with the group by functionality and doing a straing 3 table join. (NOTE: I cannot create a view because use a LIKE function in the call... view dont have indexes). However, when I try to alias the column that returns DATE subtraction ("l.listend-TRUNC(SYSDATE) daysLeft" OR "l.listend-TRUNC(SYSDATE) dayLeft") I cannot use the LIKE statement.
Here is my question. How do I port the above 3-table MySQL call to Oracle. Why am I having these problems (is it the Oracle optimizer?) and how do I avaopid them in the future.
I really appreciate anyone's input. Thanks,
Inder
WORK AROUND:
FIRST STEP:
"create TABLE BIDSUM as
select l.listingid, COUNT(b.amount) numBids, MAX(b.amount) curBid from TBL_LISTING l, TBL_BIDS b where l.listingid=b.listingid(+) group by (l.listingid);"
NEXT STEP:
select i.minbid, i.itemtitle, l.lendstart-TRUNC(SYSDATE), l.lendend, l.listingid, l.status, s.numbids, s.curbid from TBL_ITEMS i, TBL_LISTING l, BIDSUM s where l.listingid=s.listingid AND i.itemid=l.itemid AND l.status='1' AND i.catcode LIKE '12%';
THIS ALSO WORKS (no LIKE):
"select i.minbid, i.itemtitle, l.lendstart-TRUNC(SYSDATE) daysLeft, l.lendend, l.listingid, l.status, s.numbids, s.curbid from TBL_ITEMS i, TBL_LISTING l, BIDSUM s where l.listingid=s.listingid AND i.itemid=l.itemid AND l.status='1' AND i.catcode='12'";
BUT THIS DOES NOT (alias the DATE arimetic)
select i.minbid, i.itemtitle, l.lendstart-TRUNC(SYSDATE) daysLeft, l.lendend, l.listingid, l.status, s.numbids, s.curbid from TBL_ITEMS i, TBL_LISTING l, BIDSUM s where l.listingid=s.listingid AND i.itemid=l.itemid AND l.status='1' AND i.catcode LIKE '12__';

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