Specific mysql Trigger question
mysql ver 5.0.26 standard Can a trigger call a procedure that returns a result set? I am trying to get around this error msg. ERROR 1415 (0A000): Not allowed to return a result set from a trigger Thanks -winn Below is a more concise description of my issue and logic pattern when a record is updated a trigger and procedure must be fired off. if statements if the NEW.total_amount donated by contact_id is less then the current amount and the donation_id is not equal to the current max donation_id then do nothing to the max_donation table. done if the NEW.total_amount donated by contact_id is equal to the current amount donated and the donation id is not equal to current max donation then insert NEW.donation_id and contact_id into the max_donation table done if the NEW.total_amount donated is greater then the current max donation and the donation id does not equal the current max donation_id then update the max_donation table with the NEW.donation_id and amount done if the NEW.total_amount donated is less then the current max donation and the donation_id is equal to the current donation_id in the max donation table then run a procedure to populate with the right information not done so i need a procedure i can call from an after_update_trigger that will, when called search though the donation_table for all donations made by contact_id and return donation_id(s) of all records that equal the max donation. For example if contact_id makes 5 donations equal to 500.00 i need the procedure to store all of the donation_id's = $500.00 for entry into the max_donation table. Don't pick lemons. See all the new 2007 cars at Yahoo! Autos. http://autos.yahoo.com/new_cars.html -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
trigger
Any way to get this to work inside an after update trigger? insert into max_donations (donation_id, contact_id) select donation_id, contact_id from donation_test where conatct_id = NEW.contact_id and total_amount = contact_max_amount; thanks winn Have a burning question? Go to www.Answers.yahoo.com and get answers from real people who know. -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: trigger
I keep getting this error ERROR 1415 (0A000): Not allowed to return a result set from a trigger --- Rolando Edwards [EMAIL PROTECTED] wrote: insert into max_donations (donation_id, contact_id) select donation_id, contact_id from donation_test where conatct_id = (You missppelled contact_id) NEW.contact_id and total_amount = contact_max_amount; - Original Message - From: Winn Johnston [EMAIL PROTECTED] To: mysql@lists.mysql.com Sent: Wednesday, February 21, 2007 11:26:42 AM (GMT-0500) Auto-Detected Subject: trigger Any way to get this to work inside an after update trigger? insert into max_donations (donation_id, contact_id) select donation_id, contact_id from donation_test where conatct_id = NEW.contact_id and total_amount = contact_max_amount; thanks winn Have a burning question? Go to www.Answers.yahoo.com and get answers from real people who know. -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED] Have a burning question? Go to www.Answers.yahoo.com and get answers from real people who know. -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: How can I detect if MySql is already installed?
--- Rolando Edwards [EMAIL PROTECTED] wrote: If you have root access, do 'mysqladmin -u... -h... ping' - Original Message - From: Daniel da Veiga [EMAIL PROTECTED] To: mysql@lists.mysql.com Sent: Thursday, February 15, 2007 1:08:49 PM (GMT-0500) Auto-Detected Subject: Re: How can I detect if MySql is already installed? On 2/15/07, Duncan Hill [EMAIL PROTECTED] wrote: On Thursday 15 February 2007 11:12:11 Juan Eduardo Moreno wrote: Linux : $ rpm -qa |grep -i mysql Regards, Juan On 2/14/07, Zsolt Csillag [EMAIL PROTECTED] wrote: Hello, I would like to create a setup program for my demo version that uses MySql database. I need to detect if the target computer has already got the MySql installed because I don't want to ruin an existing database. Why do you need to detect if MySQL is already installed? You can simply but all files at another location (your program's folder) and write the my.ini/my.cnf file on the fly, changing the datadir and other options for it to work wherever your program will be located. You can also use sockets or named pipes instead of TCP/IP to ensure you won't block any port or mess with the network, starting your server without networking support. That only works for the limited case of * System supports RPM * Admin installed MySQL as an RPM Without knowing what platform you intend your demo to run on, giving an accurate answer will be hard. Furthermore, it's very possible to have multiple installs of MySQL on a server without conflict, so done correctly, you won't trash any other MySQL installs. Agreed completely. You simply can't bet someone is using a rpm/deb/portage based system and expect your consumers to deal with it... Also the OP never mentioned the OS, version of MySQL, etc, and that makes it VERY difficult to get an answer. -- Daniel da Veiga Computer Operator - RS - Brazil -BEGIN GEEK CODE BLOCK- Version: 3.1 GCM/IT/P/O d-? s:- a? C++$ UBLA++ P+ L++ E--- W+++$ N o+ K- w O M- V- PS PE Y PGP- t+ 5 X+++ R+* tv b+ DI+++ D+ G+ e h+ r+ y++ --END GEEK CODE BLOCK-- -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED] usally you can look in /var/lib/mysql and see all the db's already created. But if you don't see it, there is no garentee that mysql is not installed. What flavor of linux is on the server (debian, SuSe, Redhat) and what version (SELS9 Fedora Core 4, Etch?) To find out cat /etc/(name)-release MySQL-server-standard-5.0.18-0.sles9 MySQL-devel-standard-5.0.18-0.sles9 MySQL-client-standard-5.0.18-0.sles9 Also you are going to have to figure out if you use php if so you must check to see if it is installed as well, and compiled with mysql support. hope this helps -winn johnston We won't tell. Get more on shows you hate to love (and love to hate): Yahoo! TV's Guilty Pleasures list. http://tv.yahoo.com/collections/265 -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Help with mysql triggers
Question. I have two tables donation_test, and max_donation. The max donation table is a summary table, used to keep the max donation for each contact_id, by listing its donation_id. We have decided to use database level triggers to keep the summary table (max_donation) table up to date. I have been looking at the looping of a cursor syntax but am a little lost. Would someone mind taking the time to show me how exactly the syntax would look. For example if i run an update on donation_id 126 and change the amount equal to then 2000.00 then update after trigger should search though all the donations made by NEW.contact_id, figure the highest amount, then insert that into the max_donation table, also, and here is the tricky part, if there are two or more donations with the same amount, they all must be inserted into the max_donation table. mysql select * from donation_test; +-+++ | donation_id | contact_id | donation_date|total_amount | +-++-+--+ | 114 | 1 | 2007-02-05 00:00:00 | 2000.00 | | 115 | 2 | 2007-02-05 00:00:00 | 2100.00 | | 118 | 3 | 2007-02-05 00:00:00 | 1052.00 | | 126 | 2 | 2007-02-07 00:00:00 | 2.00 | +-++-+--+ mysql select * from max_donations; ++-+ | contact_id | donation_id | ++-+ | 1 | 114 | | 3 | 118 | | 2 | 126 | ++-+ Thanks very much in advance Winn Johnston The fish are biting. Get more visitors on your site using Yahoo! Search Marketing. http://searchmarketing.yahoo.com/arp/sponsoredsearch_v2.php -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
RE: mysql + LVS
--- Jimmy Guerrero [EMAIL PROTECTED] wrote: Hello, Just to make sure we separate the two... mysql cluster that preforms reads on all the slaves, and writes only on the master. The above can be used to describe a typical use case for MySQL Replication. In a MySQL Cluster there is no need to load-balance your reads and writes. Thanks, Jimmy Guerrero MySQL, Inc -Original Message- From: Winn Johnston [mailto:[EMAIL PROTECTED] Sent: Monday, July 24, 2006 3:26 PM To: mysql@lists.mysql.com Subject: mysql + LVS How stable has it become to run an instance of mysql ontop of a LVS cluster to produce a massively parrallel system to be used for huge databases? Back in the day i remember tyring to do it with mosix, not sure where they are now a days. but either way i am looking for some current information on the subject. I know this differs from the idea that you can have a mysql cluster that preforms reads on all the slaves, and writes only on the master. thanks winn johnston ok so LVS is not what i am looking for. I have been reading about some software hacks that allow mysql to use shared memory spread out over a few machines. scenerio, Huge database, over 7 million records. And a high ratio of writes vs reads. Idealy i would like to have the entire database in RAM. Does anyone have any experience running a database this big? can anyone offer a suitalbe setup? I have taken a look at the wikipedia setup http://meta.wikimedia.org/wiki/Wikimedia_servers#Overall_system_architecture thanks -winn johnston __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
RE: mysql + LVS highjacked (mysql + NFS ramfs)
--- Winn Johnston [EMAIL PROTECTED] wrote: --- Jimmy Guerrero [EMAIL PROTECTED] wrote: Hello, Just to make sure we separate the two... mysql cluster that preforms reads on all the slaves, and writes only on the master. The above can be used to describe a typical use case for MySQL Replication. In a MySQL Cluster there is no need to load-balance your reads and writes. Thanks, Jimmy Guerrero MySQL, Inc -Original Message- From: Winn Johnston [mailto:[EMAIL PROTECTED] Sent: Monday, July 24, 2006 3:26 PM To: mysql@lists.mysql.com Subject: mysql + LVS How stable has it become to run an instance of mysql ontop of a LVS cluster to produce a massively parrallel system to be used for huge databases? Back in the day i remember tyring to do it with mosix, not sure where they are now a days. but either way i am looking for some current information on the subject. I know this differs from the idea that you can have a mysql cluster that preforms reads on all the slaves, and writes only on the master. thanks winn johnston ok so LVS is not what i am looking for. I have been reading about some software hacks that allow mysql to use shared memory spread out over a few machines. scenerio, Huge database, over 7 million records. And a high ratio of writes vs reads. Idealy i would like to have the entire database in RAM. Does anyone have any experience running a database this big? can anyone offer a suitalbe setup? I have taken a look at the wikipedia setup http://meta.wikimedia.org/wiki/Wikimedia_servers#Overall_system_architecture after talking to a few people on the #mysql irc someone suggested using NFS to create a ramfs to get 100GB+ RAM shared memory to load the entire database into the RAM. Can anyone offer any Pros or Cons to this setup, drawing from personal expierence? thanks -winn johnston __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
mysql + LVS
How stable has it become to run an instance of mysql ontop of a LVS cluster to produce a massively parrallel system to be used for huge databases? Back in the day i remember tyring to do it with mosix, not sure where they are now a days. but either way i am looking for some current information on the subject. I know this differs from the idea that you can have a mysql cluster that preforms reads on all the slaves, and writes only on the master. thanks winn johnston __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
developing an interface
I have taken on a job replacing an old AS400 RPM database with four thin clients. They really like the feel of the thin client interface, no point and click, no graphics, just green text on a black background. I could use any suggestions on what to read, or where to look to find a way to create a similar feel on the new interface. I am leaning heavily to php, since it would make the Internet port easier, but am not adversed to changing my mind. Thank You very much for your replies. Winn Johnston __ Do you Yahoo!? Yahoo! Mail - You care about security. So do we. http://promotions.yahoo.com/new_mail -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
interface developing
i have taken on a job replacing an old AS400 RPM database with four thin clients. They really like the feel of the thin client interface, no point and click, no graphics, just green text on a black background. I could use any suggestions on what to read, or where to look to find a way to create a similar feel on the new interface. I am leaning heavily to php, since it would make the Internet port easier, but am not adversed to changing my mind. Thank You very much for your replies. Winn Johnston __ Do you Yahoo!? Yahoo! Mail - Easier than ever with enhanced search. Learn more. http://info.mail.yahoo.com/mail_250 -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: developing an interface
--- [EMAIL PROTECTED] wrote: Winn Johnston [EMAIL PROTECTED] wrote on 02/04/2005 10:30:54 AM: I have taken on a job replacing an old AS400 RPM database with four thin clients. They really like the feel of the thin client interface, no point and click, no graphics, just green text on a black background. I could use any suggestions on what to read, or where to look to find a way to create a similar feel on the new interface. I am leaning heavily to php, since it would make the Internet port easier, but am not adversed to changing my mind. Thank You very much for your replies. Winn Johnston __ Do you Yahoo!? Yahoo! Mail - You care about security. So do we. http://promotions.yahoo.com/new_mail Sounds like you want to develop a console application using some kind of TELNET daemon. I don't do that kind of development but it may be something for you to research. My users tell me they prefer the point-and-click of browser-based, thin client apps over their old terminal-type apps, sorry! Shawn Green Database Administrator Unimin Corporation - Spruce Pine My users have expressed a distinct dislike for point and click methods. They would rather use the keyboard in the same way a ticket agent does when she is looking for a flight :) Winn Johnston __ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: developing an interface
lynx i like it :) thanks duncan, u the man winn johnston -- Duncan Hill [EMAIL PROTECTED] wrote: On Friday 04 February 2005 16:03, Winn Johnston might have typed: My users have expressed a distinct dislike for point and click methods. They would rather use the keyboard in the same way a ticket agent does when she is looking for a flight :) You can do this one of two ways. Give them shell logins on a *nix box (or port to win32) and write your application in perl or php as a console app. Give them lynx and write your app in php as a web app, using style sheets etc. They get a green screen (literally with the right lynx config) where tab etc all behave (complete with 1 - 9 working as hotkeys for menus), but you can migrate new users to the Firefox/IE interface :) -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED] __ Do you Yahoo!? Meet the all-new My Yahoo! - Try it today! http://my.yahoo.com -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
