MySQL: How to pull information from multiple tables based on information in other tables?
- by Greg
Ok, I have 5 tables which I need to pull information from based on one variable.
gameinfo
id | name | platforminfoid
gamerinfo
id | name | contact | tag
platforminfo
id | name | abbreviation
rosterinfo
id | name | gameinfoid
rosters
id | gamerinfoid | rosterinfoid
The 1 variable would be gamerinfo.id, which would then pull all relevant data from gamerinfo, which would pull all relevant data from rosters, which would pull all relevant data from rosterinfo, which would pull all relevant data from gameinfo, which would then pull all relevant data from platforminfo.
Basically it breaks down like this:
gamerinfo contains the gamers basic
information.
rosterinfo contains basic information about the rosters
(ie name and the game the roster is
aimed towards)
rosters contains the actual link from the gamer to the
different rosters (gamers can be on
multiple rosters)
gameinfo contains basic information about the games (ie
name and platform)
platform info contains information about the
different platforms the games are
played on (it is possible for a game
to be played on multiple platforms)
I am pretty new to SQL queries involving JOINs and UNIONs and such, usually I would just break it up into multiple queries but I thought there has to be a better way, so after looking around the net, I couldn't find (or maybe I just couldn't understand what I was looking at) what I was looking for. If anyone can point me in the right direction I would be most grateful.
