Got a challenge for ya guys
| From: | Noah Spitzer-Williams | Date: | Mon, 25 Dec 2000 21:48:03 +0000 |
| Subject: | Got a challenge for ya guys | ||
| Groups: | php.db | ||
| Request: | Send a blank email to php-db+get-5432@lists.php.net to get a copy of this message | ||
aight i got these two tables: lets structure them like this:
TABLE1
username | group | sex
john | 1 | M
mike | 1 | M
jen | 2 | F
TABLE2
username | age
john | 2
mike | 3
jen | 2
here what i want to do:
find how many unique groups are of age '2'
its quite easy to find how many different people are of age '2' but how can
i get the number of groups?
also, i dont want to list the same group more than once. i'd like to have
this all done in mysql so i can calculate how many results (see a search
engine comin here...hehe)