Re: Query and join problem with null values

2001-12-07 Thread Michael Delorme
Thanks ! It's exactlly what I wanted. I got the same result a few seconds ago using EMS MySQL Manager but I didn't understand how. Your example is much better ! What is the difference between a LEFT JOIN and a LEFT OUTER JOIN ? And of course you're right for the data type ; Thanks again A

Re: Query and join problem with null values

2001-12-07 Thread Etienne Marcotte
mysql> create table users( -> usrID smallint unsigned auto_increment, -> usrZip char(5), -> primary key(usrID)); Query OK, 0 rows affected (0.00 sec) mysql> create table cities( -> ctyZip char(5) not null, -> ctyName varchar(30) not null, -> primary key(ctyZip)); Query OK,

RE: Query and join problem with null values

2001-12-07 Thread Michael Delorme
>people.zip = city.zip > >yo get 2 rows from people 1 and 3 > >notice there is no peopleid 2 from first join so correct answer is to retun >null > >Rick > >-Original Message- >From: Michaël Delorme [mailto:[EMAIL PROTECTED]] >Sent: Friday, December 07, 2001

RE: Query and join problem with null values

2001-12-07 Thread rick herbel
: [EMAIL PROTECTED] Subject: Query and join problem with null values Hi guys I have a problem on a SQL query : I got no records selected. Below is a sample of my 2 tables : A table identifying people, containing their adress therefore a ZIP code. However for some people I don't have their a

Query and join problem with null values

2001-12-07 Thread Michaël Delorme
Hi guys I have a problem on a SQL query : I got no records selected. Below is a sample of my 2 tables : A table identifying people, containing their adress therefore a ZIP code. However for some people I don't have their adress, so no ZIP code : Table People +--+--+ | PeopleID