On Saturday 16 April 2005 17:06, Ryan A wrote: > Hey, > My host has MySql 4.0.x so I cant really use the nested selects of 4.1 :-( > please tell me how you solved something like this; > > I have two tables: > users_online (username , dateandtime) > users_details (cno, username, has_image, image_name) > > 1a) I have to select x records from users_online where $username is not > more than 3 minutes old, > 1b) then I have to check if that username has_image,if yes, get the > imagename > > I thought of having the imagename also in the users_details, but we are > allowing our members to > change/modify their images at will.... > > What kind of sql do I use above? I dont want to run a query on every record > returned from users_online > as that would be really "expensive". See the JOIN syntax in MySQL. You can join the two tables. http://dev.mysql.com/doc/mysql/en/join.html BTW this is a question for the [MySQL General] list at mysql@xxxxxxxxxxxxxxxx :-) > > Thanks, > Ryan > > > > -- > No virus found in this outgoing message. > Checked by AVG Anti-Virus. > Version: 7.0.308 / Virus Database: 266.9.13 - Release Date: 4/16/2005 -- Cyberly yours, Petar Nedyalkov Devoted Orbitel Fan :-) PGP ID: 7AE45436 PGP Public Key: http://bu.orbitel.bg/pgp/bu.asc PGP Fingerprint: 7923 8D52 B145 02E8 6F63 8BDA 2D3F 7C0B 7AE4 5436
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