RE: [PHP-DB] left joins and mysql
| From: | Rick Emery | Date: | Thu, 31 Jan 2002 14:45:08 +0000 |
| Subject: | RE: [PHP-DB] left joins and mysql | ||
| Groups: | php.db | ||
| Request: | Send a blank email to php-db+get-16351@lists.php.net to get a copy of this message | ||
First, don't try to force JOIN to do something that is is not designed to
do. Use WHERE to restrict your query.
Try:
SELECT t.team_name,t.flight_id,p.player_fname,p.player_lname
FROM team t
LEFT JOIN player p ON
t.team_id=p.player_team_id
WHERE t.flight_id=p.player_flight_id && p.player_status='captain'
ORDER by t.flight_id
-----Original Message-----
From: tom hilton [mailto:tom-hilton@home.com]
Sent: Thursday, January 31, 2002 8:27 AM
To: php-db@lists.php.net
Subject: [PHP-DB] left joins and mysql
Hi,
I am trying to do a left join on a "master" table, but I don't want to pull
all the records from this table. Can anyone tell me the syntax for using a
WHERE or equivalent on the master table before left joining the slave table?
Is this possible, or do I have to pull all the records from the master? I
have a table called "team" that is the master, I want to join a table called
"player" on it, but I only want teams that belong to one particular league
(flight_id), not all teams (there are eight flights in the "team" table).
Below is the basic syntax I am using now, and it is pulling all the teams
from the team table, not just the teams where flight_id=1. Is there
someplace after the "join" that I can restrict "team" records using a WHERE
statement? Sorry if this is confusing.
$big_join=mysql_query
SELECT team.team_name,team.flight_id,player.player_fname,player.player_lname
FROM team left join player on team.flight_id=1 and
team.team_id=player.player_team_id and
team.flight_id=player.player_flight_id and player.player_status='captain'
ORDER by team.flight_id
or die("no friggin way")
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