sql query with join and same column twice...
| From: | Web Manager | Date: | Fri, 31 Aug 2001 03:58:34 +0000 |
| Subject: | sql query with join and same column twice... | ||
| Groups: | php.general | ||
| Request: | Send a blank email to php-general+get-65404@lists.php.net to get a copy of this message | ||
Hello,
Here are 2 tables:
airport
---------
airport_id
name
code
city_id
destination
-----------
destination_id
dest_name
airport_dep_id // using airport.airport_id (departure)
airport_arr_id // using airport.airport_id has well (arrival)
I have 2 columns in the second table that uses the same name column in
the first table...
I dont know how to formulate my SQL query... I want to select the
destinations in the destination table with not the ID of each airport
but their names. I can do a join with one but with the second one, I get
no results... And this is confusing!
select dest.dest_name, air.name as airport1, air.name as airport2 from
destination, airport air where dest.airport_dep_id_id=air.airport_id and
dest.airport_arr_id=air.airport_id;
This is not good...
Any help?
Thanks!
--
Marc Andre Paquin