Sum of values based on usergroupid, using two tables
I'm a webmaster relatively inexperienced with databases and mySQL, so I am looking for any sort of pointer in the right direction like this. I've attempted to write a few SUM statements (is that even what you call them? statements?) using resources around the web, but I just can't seem to get this right.
I have two tables user and userfield.
In the user table I have the userid and usergroupid values.
In the userfield table I have the userid and userfield16 (an integer value representing points) values.
I would like to total the userfield16 points based on the usergroupid and have this value displayed on the forumhome index.php.
Make sense?
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