Find rows in table A where table B = 'hello' AND table B = 'world'
That's a lousy subject line, but I don't know how to describe this problem. I've been banging my head against this for a couple of days, and I'm certain there's a simple solution I'm missing. I've got a URL table, a keyword table, and a joining table, so each URL has a list of keywords applied to it, and each keyword can be applied to many URLs: tbl_url --- INT urlid, VARCHAR url tbl_keyword --- INT keywordid, VARCHAR keyword tbl_url_keyword --- INT urlid, INT keywordid How do I find all the tags that are tagged with the words mysql AND databases AND tutorial? It seems so simple, I can't believe it's caused me so much grief. -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Replication, Windows, Modems
Hi, hoping someone's come across this before: I need to replicate data between two copies of MySQL, both running on Windows XP. The amount of data is tiny - maybe 35k a day as an upper bound. It's basically monitoring data from a remote device. The problem is that neither machine is internet-enabled - they both have modems in them. So, what's the best way to run this sequence several times a day? a) connect to the remote machine via modem b) kick off the MySQL replication process I'm thinking a small VB app, but any pointers gratefully received. Google hasn't thrown up much of use, and Windows administration isn't really my thing. -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Missing row
Hi, small but disturbing oddity, this. I have a simple table: CREATE TABLE musician ( musicianid int(10) unsigned NOT NULL auto_increment, name varchar(60) NOT NULL default '', PRIMARY KEY (musicianid) ) Type=MyISAM; There are 50 or so lines in the table. I inserted 2 new lines with PHP, with this statement: INSERT INTO musician SET name = '$name' But from the console, one of the lines is missing: mysql SELECT * FROM musician ORDER BY musicianid; +++ | musicianid | name | +++ [...] | 51 | Jewel | | 52 | Lush | | 53 | My Bloody Valentine| | 55 | Fred | +++ Yet if I ask for the missing line specifically, it is there: mysql SELECT * FROM musician WHERE musicianid = 54; +++ | musicianid | name | +++ | 54 | john Smith | +++ Restarting the console doesn't seem to make any difference (I haven't tried restarting MySQL). Is this expected behaviour? A bug? My system: mysql Ver 11.16 Distrib 3.23.49, for Win95/Win98 (i32) Apache/1.3.24 (Win32) PHP Version 4.3.2 -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Select where A is not a member of B
Hi - I've got an annoying problem here, I've checked books, web, archives, etc, but can't find anything suitable so far. I have 2 data tables (ignoring the other columns, not important) : ++ | user | ++ | userid | ++ ++ | list | ++ | listid | ++ and a joining table : +--+ | userlist | +--+ | listid | | userid | +--+ As you can see, users can belong to many lists, lists can contain many users. I need to find, for each user, whether they are a member of list n : ++--+ | userid | memberoflist | ++--+ | 1 | true | | 2 |false | | 3 | true | | 4 |false | ++--+ It seems simple, but I've been banging my head against this all weekend. When I break it down, I need to find 3 things : Users that are members : SELECT user.userid FROM user, userlist WHERE listid=1 AND user.userid=userlist.userid Users that belong to NO lists : SELECT user.userid FROM user LEFT JOIN userlist ON user.userid=userlist.userid WHERE listid IS NULL Users that belong to some lists, but not the one I'm interested in : this is the one that I'm stuck on. Any thoughts? Suggestions? djo - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
