Re: problem with LEFT JOIN

2005-07-11 Thread Juan Pablo Espino
Thanks to all, As you says me, the solution was the indexes. I didn't have an index in results.sample_id. Now the query returns succesfully in a few seconds, regards Juan P. Espino On 7/11/05, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: > > > Juan Pablo Espino <[EMAIL PROTECTED]> wrot

Re: problem with LEFT JOIN

2005-07-11 Thread SGreen
Juan Pablo Espino <[EMAIL PROTECTED]> wrote on 07/08/2005 03:37:14 PM: > Hello all! > > I have two tables in my database: results(20 000 rows) and > data_lab1(3 000 rows) Both are related by a sample number (sample_id.) > I need to find the samples of data_lab1 table that they are not in > resul

Re: problem with LEFT JOIN

2005-07-11 Thread Gleb Paharenko
Hello. Check that MySQL doesn't hang, and that your system doesn't swap. You can connect to MySQL server and check with 'SHOW PROCESSLIST' states of MySQL threads. See: http://dev.mysql.com/doc/mysql/en/show-processlist.html Juan Pablo Espino <[EMAIL PROTECTED]> wrote: > Hello all

Re: Problem with LEFT JOIN

2003-02-13 Thread Lisi
o get it if people don't have to spend time figuring out what the question is. - Original Message - From: "Lisi" <[EMAIL PROTECTED]> To: "Bill Easton" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Monday, February 03, 2003 3:37 AM Subject: Re:

Re: Problem with LEFT JOIN

2003-02-09 Thread Bill Easton
;re more likely to get it if people don't have to spend time figuring out what the question is. - Original Message - From: "Lisi" <[EMAIL PROTECTED]> To: "Bill Easton" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Monday, February 03, 2003 3:37

Re: Problem with LEFT JOIN

2003-02-03 Thread Lisi
OK, I'm coming back to this problem after not touching it for a while. Sorry about the indentation, it's a dynamically generated query and I just cut and pasted into the email. I tried your suggestion, and it is showing the correct number of displays for most ads, but it is not limiting the cl

Re: Problem with LEFT JOIN

2003-01-20 Thread Bill Easton
Shalom, Lisi, (Sure would have been nice if you had indented and simplified your SQL statements so they could be read by a mere human instead of just by a computer ;-}) You have SELECT ... FROM display LEFT JOIN click ON display.name=click.name AND ... AND DAYOFMONTH(dis

RE: Problem with LEFT JOIN

2002-03-04 Thread Roger Baklund
* ds > > Hi, please help me with this problem... > > > > Suppose i have a table whith ids and two more tables with logs like > > this: > > > > table0: id1,id2 > > table1: id1,id2,date,ip > > table2: id1,id2,date,ip > > > > Table0 is where i have all existent pairs (id1,id2). > > Table1 logs all ev

Re: Problem with left join on not null datetime

2001-11-15 Thread Paul DuBois
At 12:57 PM -0700 11/15/01, Mark A Ohrenschall wrote: >I'm having a problem with Distrib 3.23.42 with the following query: > >select x1.*,x2.* from x1 left join x2 on x1.d1=x2.d2 where x2.d2 is null; > >I'm finding that a left join on datetime fields that do not allow nulls is not >working when I'