Peter, Try this query:
SELECT a.name, a.field1, a.field2, b.field3, b.field4,c.field5, c.field6 FROM t1 as a left join t2 as b on (a.name = b.name) left join t3 as c on (a.name = c.name) having b.field3=5 OR c.field6=16 Best regards, Mikhail. ----- Original Message ----- From: "Peter Stöcker" <[EMAIL PROTECTED]> To: "Mikhail Entaltsev" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Thursday, September 19, 2002 11:56 AM Subject: Re: Re: JOIN-Question Hi Mikhail! The query should be released automaticly and it shoulb be something like: SELECT a.*,b.*,c.* FROM ?????? WHERE b.field3=5 OR c.field6=16 I want to have all entries wich fit to the condition. But at this time I don't know weather there is a entry with name="test" or "test2" or not. So when there is none it should return some NULLs otherwise the entries. I already tries using LEFT JOINs, but it doesn't work the way I want it to. Do you think there is a proper way to solve this problem? CU, Peter "Mikhail Entaltsev" <[EMAIL PROTECTED]> schrieb am 19.09.02 11:36:16: > Peter, > > If you would like to get such resultset > > > name field1 field2 field3 field4 field5 field6 > > ----------------------------------------------------------------- > > test 1 2 5 6 9 10 > > test 1 2 5 6 11 12 > > test2 3 4 NULL NULL 15 16 > > then you need to use left join for t2, but based only on these information > I couldn't help you to implement this query (I don't know how to group by > rows). > Please, give more information about why do you need exactly this resultset. > > Best regards, > Mikhail. > > ----- Original Message ----- > From: "Peter Stöcker" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Thursday, September 19, 2002 11:03 AM > Subject: JOIN-Question > > > > Hi there! > > > > I have a question on JOINs. > > > > First the system: > > > > table1: name: t1 > > entries: name field1 field2 > > ------------------------ > > test 1 2 > > test2 3 4 > > > > table2: name t2 > > entries: name field3 field4 > > ------------------------ > > test 5 6 > > test 7 8 > > > > table3: name t3 > > entries: name field5 field6 > > ------------------------ > > test 9 10 > > test 11 12 > > test2 13 14 > > test2 15 16 > > > > And here the problem: > > > > with the query > > > > SELECT a.*, b.*, c.* FROM t1 a INNER JOIN t2 b USING(name) INNER JOIN t3 c > USING(name) WHERE b.field3=7 OR c.field6=16; > > > > I only get 1 entry with name="test". > > > > By using LEFT JOIN I only get name="test" either. For sure, because in > table2 there is no test2 entry. > > > > The only 2 ways I know to get also test2: > > 1. "INSERT INTO t2 VALUES("test2",NULL,NULL)" > > 2. temporary table > > > > But I don't want to have such dummy entries or a temporary table. Does > anybody know what I have to do to with: > > > > SELECT a.*,b.*,c.* FROM ?????? WHERE b.field3=5 OR c.field6=16 > > > > > > the result: > > > > > > name field1 field2 field3 field4 field5 field6 > > ----------------------------------------------------------------- > > test 1 2 5 6 9 10 > > test 1 2 5 6 11 12 > > test2 3 4 NULL NULL 15 16 > > > > > > I hope that someone can help me! > > > > Thank a lot, > > Peter > > > ____________________________________________________________________________ > __ > > WEB.DE MyPage - Ultimatives Kommunikationstool! Ihre Message sofort > > online! Domain aenderbar! http://www.das.ist.aber.ne.lustige.sache.ms/ > > > > > > --------------------------------------------------------------------- > > Before posting, please check: > > http://www.mysql.com/manual.php (the manual) > > http://lists.mysql.com/ (the list archive) > > > > To request this thread, e-mail <[EMAIL PROTECTED]> > > To unsubscribe, e-mail > <[EMAIL PROTECTED]> > > Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php > > > ____________________________________________________________________________ __ Jetzt testen für 1 Euro! Ihr All-in-one-Paket! https://digitaledienste.web.de/Club/?mc=021106 --------------------------------------------------------------------- Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail <[EMAIL PROTECTED]> To unsubscribe, e-mail <[EMAIL PROTECTED]> Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php