Re: special join
Jan Novak <[email protected]> Mon, 7 Sep 2020 14:50:09 +0200
| Newsgroups | comp.databases.mysql |
|---|---|
| Organization | MB-NET.NET for Open-News-Network e.V. |
| Message-ID | <[email protected]> |
Am 07.09.20 um 14:16 schrieb The Natural Philosopher: > On 07/09/2020 12:52, Nikolaj Lazic wrote: >> Dana Mon, 7 Sep 2020 12:26:14 +0200, Jan Novak <[email protected]> >> napis'o: >>> Hi, >>> >>> i have a table "server" with auto_increment field ID and a table "ip", >>> with a filed "SERVER_ID" corrosponding to "server.ID" >>> >>> select ip.VALUE as "ip" from server, ip where server.DELETED=0 and >>> server.ID=ip.SERVER_ID >>> >>> If in "ip" table for the server are more then one ip adress are saved, i >>> get in my results the server also more then one time listed. >>> >>> My question is: how can i get only the server with the first IP from the >>> ip Table, if more then one ip's saved there. >> >> group by... count... and then select those >1. >> >> https://www.w3resource.com/sql/aggregate-functions/count-with-group-by.php >> >> > distinct.. Not unique as I said earlier i think, thats not the right way. With distinct, i get different IP Adresses. But in the ip Table, there are only different ip addresses, therefor it should not help. Jan