Can You RIGHT JOIN A List? (from Two Different Servers And Databases)
One database provides a list of items to be used in a query against another database's table. The two different database are on two different servers.
Can I get the list from one query and use it as a LEFT JOIN query in another?
Like:
select items from database1.table1
<loop through in php to get list>
select fish from database2.table2
RIGHT JOIN <somehow add list here from table1>
I've tried using the list in an IN where clause but I need ALL those in the list and only those from table2 where there's a match, else, NULL.
View Complete Forum Thread with Replies
See Related Forum Messages: Follow the Links Below to View Complete Thread
MySQL Databases And 2 Servers?
We are planning to reprogramm our search machine and website. Since we have call agents who query the same database as the customers do, we had the idea of splitting the database to 2 servers. The call agents can update customer data with our intern webinterface, which not only concerns tables that are for the call agents, but also concerns tables of the search machine, holding company data such as address, search words, etc. O.k., now my questions. Since the customer himself can administer his own data, as well as the call agent (or media agent), I was thinking of doing following: * I have 2 servers. Server 1 is responsible for the search machine and just serves customers searching for a company or for products. The MySQL database is there just for querying. * Server 2 serves call agents, as well customers who want to change their data, reading and writing. * Since the search machine should of course show updated data the call agent or the customer have eventually changed, the data from server 2 must be synchronized with the MySQL databese of server 1. (e.g. at midnight) Questions: ------------- 0. Is the above described the right way? 1. What do I have to consider when planning the database structure? 2. How do I synchronize? Can I copy specific tables from one server to another using cronjobs (crontables)? Since this is absolute newland to me, how? Any expert knowledge or experience with MySQL replication or MySQL clusters? I think replication is just thought for mirroring, or am I mistaken?
MySQL Databases And 2 Servers?
We are planning to reprogramm our search machine and website. Since we have call agents who query the same database as the customers do, we had the idea of splitting the database to 2 servers. The call agents can update customer data with our intern webinterface, which not only concerns tables that are for the call agents, but also concerns tables of the search machine, holding company data such as address, search words, etc. O.k., now my questions. Since the customer himself can administer his own data, as well as the call agent (or media agent), I was thinking of doing following: * I have 2 servers. Server 1 is responsible for the search machine and just serves customers searching for a company or for products. The MySQL database is there just for querying. * Server 2 serves call agents, as well customers who want to change their data, reading and writing. * Since the search machine should of course show updated data the call agent or the customer have eventually changed, the data from server 2 must be synchronized with the MySQL databese of server 1. (e.g. at midnight) Questions: ------------- 0. Is the above described the right way? 1. What do I have to consider when planning the database structure? 2. How do I synchronize? Can I copy specific tables from one server to another using cronjobs (crontables)? Since this is absolute newland to me, how? Any expert knowledge or experience with MySQL replication or MySQL clusters? I think replication is just thought for mirroring, or am I mistaken?
Scripts, Databases And Servers
Is it possible to have a script in server1 calling a database located in server2 (both remote servers)? I made a try but it didn't work. PHP Code: $hostname_owner = "mysql.server.com"; // this is remote $database_owner = "database"; $username_owner = "owner"; $password_owner = "passw"; $owner = mysql_connect($hostname_owner, $username_owner, $password_owner) or trigger_error(mysql_error(),E_USER_ERROR);
Moving Databases Across Servers
I just found out that my host is running an old version of mysql, and I think that's why alot of the things I've written aren't working. I've got host space at another server with a newer version of MYsql, and I'd like to transfer most of my work over there. ...But I don't want to have to completely rebuild all my databases and their entire contents.Is there some simple way anyone knows to download the tables & contents of a database from one host and then put it back up on another?
SELECT From Different Databases/servers Tables
I can't find the exact MySQL instructions to get data from tables located on a different database in the same engine and/or on different databases in different engines. I am working to a migration from Informix. In Informix a table name is defined as: <tbl_name> (as usual) or <db_name>:<tbl_name> (same engine, different db) or <db_name>@<server>:<tbl_name> (different engine, different db) How can, if possible, replicate this syntax in MySQL ??
Join Across Servers
Can you join two tables across different servers in mySQL, or am I dreaming of Oracle?
How To List All Databases
I created some databased under commandline mode. Now I want to view the list of all databases, is it possible?
Can Connect And List Databases But Not Tables
I have two mysql servers (Centos 4, MySQL 4.1.20-log) and I need to perform admin from a remote server. I've added in both servers a user with all privileges GRANT ALL PRIVILEGES ON *.* TO 'user'@'phpmyadminserver' IDENTIFIED BY PASSWORD 'XXXXXXXXXXX' In the first one I can connect and list databases and tables. In the second one I can only connect and list the databases. A show tables command shows me : show tables; Empty set (0.01 sec) Any ideas?
Connect/ Join Query Multiple Dbs Multiple Servers
Struggling to connect simultaneously to remotehost@my_ip_address AND localhost@my_field_db FROM my_field_tablet_pc to affect a custom sycnchronization that SQLyog will not allow. Both remotehost and localhost are built on WAMP stacks.
Join 2 Tables From Different Databases
I need to join 2 tables from different databases for creating one SELECT query and get data from both tables. Mechanism LEFT JOIN don't allow to do this or may be I don't see it. Can I join and if I can, how can I do this?
Using A Field, Which Is A Comma Separated List, As The List In An IN Comparison Test.
The following query only reads the first character of a comma separated list stored in a field of the records being queried. The varchar field in table d named "display" holds 1,4 The query " select * from d where 4 IN (display) " tests false. If I change the field "display" to 4,1 Then the query tests true. It is either testing only the first character, or is stopping at the comma. I need this to test true if the value is anywhere in the list, what am I doing wrong here?
Select * Using Id List V.fast, Delete Using Id List Taking Hours.
I have a table of about 20 million rows, with about 20 columns. I want to delete 10 of these rows. I have the ids already, and id is the primary key so it should be simple - i thought. This query completed in 0.27 seconds - select * from users where id in (3811150, 4470160, 479422, 2491277, 9443643, 4594310, 2556165, 12075603, 2533320, 45737); This next query, however, has been running for several hours - how can there be such a discrepancy? Should i kill it and retry? delete from users where id in (3811150, 4470160, 479422, 2491277, 9443643, 4594310, 2556165, 12075603, 2533320, 45737);
Full List Of MyTable21 And Some List Of MyTable22
data in myTable21 (id) country (1) Canada (2) France (3) Egypt (4) America data in myTable22 (id) city name (1) Montreol Jane (2) Paris Mary (3) Cairo Tom (4) New York Jane (4) Chicago Tom I have data in myTables like the above. The following code produces the following result. but I like to produce my target result. code1 select myTable21.id, name, country, city from myTable21 left join myTable22 on myTable21.id=myTable22.id where name='Tom' result1 (3) Egypt Cairo (4) America Chicago target result1 (1) Canada (2) France (3) Egypt Cairo (4) America Chicago code2 select myTable21.id, name, country, city from myTable21 left join myTable22 on myTable21.id=myTable22.id where name='Jane' result2 (1) Canada Montreol (4) America New York target result2 (1) Canada Montreol (2) France (3) Egypt (4) America Chicago code3 select myTable21.id, name, country, city from myTable21 left join myTable22 on myTable21.id=myTable22.id where name='Mary' result3 (2) France Paris target result2 (1) Canada (2) France Paris (3) Egypt (4) America How can I get the full list of myTable21 and selected values from myTable22?
Creating List Of People Not On List
I am using the following query to try to get a list of people not in a specific list. I can further restrict it by company name but I am getting duplicate entries if the person is listed on multiple lists. (It is further reduced by a clause to restrict by company, but that is not causing errors AFAIK) SELECT people.`First Name`, people.`Last Name`, people.PersonID, Company FROM people LEFT JOIN listtrack ON people.PersonID=listtrack.Person_ID WHERE (listtrack.List_ID<>4 Or listtrack.List_ID Is Null) If I remove the List_ID<>4 clause then I get people who are not on any list., but I want to be able to add one person to multiple lists, without running the risk of data duplication.
Two Servers
I run two MySQL servers on Windows with the two services. I read in the docs that it exists a way to identify the servers in my.cnf by groups and about a tool from Linux to manage the groups. How can I start a server on Windows through the my.cnf/my.ini 's groups?
Different Db Servers
db masters, Can I use databases from different servers ? I mean, for example, I have two sites : www.site1.com --- hosted by providerA www.site2.com --- hosted by providerB The site2 uses databases from providerA for running queries or updating tables
2 Mysql Servers
I have a Mysql server lets call it "Production", but also do lots of development when traveling (offline) on my laptop, where i also have mysql instance installed + php + apache .... both MySql are 5 and same build running on windows. What would be the best way to "replicate" Mysql from my laptop to the server when I get connected. One way solution (from Laptop to Server) would be great, but both ways (whichever is newer gets replicated would be excellent). thought about replication but i undertood that the master 'version' will always be writen to slave. We need to consider any kind of changes, table changes, dbs change, users, data, etc... Hope you can give me a light, it is not a large amount of data, and i would not mind a very manual process, as long i can script it or if it is a few steps only.
Redundant Servers
So physical Server A has a mysql database running on it, and physical Server B has an identical database running on it. so if one of the physical servers goes down, I can get information from the other mysql server. I also want them to keep identical information on each other, so if a user updates his password, it's updated in both databases in real time....and when one of the servers comes back online, it gets rebuilt by server that stayed up.
Multiple Servers
How do I configure my phpmysadmin to administer mysql databases on multiple servers?
Two Master Servers
I am using two master servers that are synchronized with each other so that if one of them gets disconnected, the other one could take over and no data is lost. Now my problem is doing backup on the servers. Say I am doing backup on Master 1 and after backup, I will delete the data. So, since Master 2 is synchronized with Master 1, will the deleted data be written back to Master 1? My batch file is something like this. echo Executing MYSQL BACKUP mysqldump -uroot -proot --result-file=%SAVPATH%%FILENAME%".sql" database1 echo Executing MYSQL DELETE mysql -uroot -proot datalog < "C:Program FilesMySQLMySQL Server 5.0inscript.sql" Script.sql will call the command "DELETE from table1" for me.
Slave Servers
i have do replication with 1 master server to 3 slave servers. And i want to grant the 3 slave servers only select option for all user;
Running Two Servers
--=__Part1A441A35.0__= Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit I am looking into installing 2 mysql servers on the same windows 2000 PC. From what I have found, it is usually possible to have 2 different versions on the same machine. (Usually one for testing and the other for production). However, I am trying to run 2 production servers, one for personal family info, and the other for business opportunity. Being that I just started using mysql, is it possible then to have the same version installed twice, or how do I accomplish my task?
Running 2 Msql Servers
I want to run two mysql server on the same win xp machine independent of each other: one on 3306 and one on 3309. How and what files do I have to modify to set the second server port to 3309 permanently.
Two MySql Servers, One Database
I have two MySql servers, one in my local PC and one as a testing server in the next room. Using DW 2004 I can use the "put" and "get" to get my PHP files from one PC to the next quicky. How can i do that with the two MySql servers? So if I change the Structure of a table or and data to the Mysql database on my local PC, it will send the changes to the testing server.
Consolidating MySQL Servers
My organization currently has 2 different MySQL database servers. We are in the process of moving the databases from Server A to Server B and have Server B be our primary database server. I've done some research on the web and believe the best option is to use the "mysqldump" command to remotely recreate Server A's databases on to Server B. Can anyone please advise whether this is the best option? Also, using the "mysqldump" command, are there any overwrite issues, such as existing tables on Server B being overwritten by tables with the same names from Server A. Would these tables be simply overwritten or would there be any type of warning prompt?
Master Servers Merge
I want to make query to merge table1 from master server A and table2 from master server B (ex: select * from table1, table2) because my site becomes heavy traffic and database gets bigger. It means I need to separate tables and create new database on other master server B. Do you know how to make "merge" from master server A and B?
Design Of Database Servers
Database design is well covered in undergrad CS. But does anyone know of a textbook that deals with the design of database servers (and probably touches on databases themselves), and perhaps deals with interpreting SQL inquiries? The motivation for this is that I wish to write a database server for a proprietary operating system (it resembles POSIX, but is not completely compliant) for an embedded processor system that exchanges queries from clients also employing embedded processors. Stored data is all in one place. I'm a little familiar with the MySQL source code, but I don't wish to replicate something that complex. The sort of investment I'm talking about should involve no more than three man, er, person-months by an experienced C++ programmer with plenty of experience in systems and database programming for both Microsoft and Linux platforms.
Multiple MySQL Servers
If you need multiple MySQL servers running, what's the difference between installing MySQL once and running multiple servers (by issuing multiple mysqld commands with their own options), versus actually installing two or more DIFFERENT instances of the same version of MySQL? What is typically done? What are the advantages/disadvantages of either method?
Sharing A Database Between Two Servers
I have 2 harddrives, one with linux and windows, and the other holds all my php and sql databases. I set up the databases with windows and everything is fine. Now I want to be able to just have the linux version of mysql look at that same database on the second harddrive and work with the database. The error I get is "Can't open file: '**.ibd' (errno: 1): "** being any of my tables. Is it possible to configure them to work together in anyway? I dont want to manually have to dump the database and then reload it every time i switch between the OSs... any suggestions?
Mysql On Windows Servers
Will mysql work with microsoft server products? Does it lose any funtionality? Would it be better to use mssql?
Multiple MySql Servers
Trying to install MySql 4.1 to our Linux server that already has version 4 installed. I created a my.cnf file and set the following params: datadir = /usr/local/mysql-4.1/data/ port = 3304 socket = /var/run/mysql4.1/mysql4.1.sock pid-file = /var/run/mysql4.1/mysql4.1.pid log = /var/log/mysql4/mysql4.1.log The current installation is running from a different port and the data dir, socket, pid-file, and log are in different locations. I then attempt to start MySQL like this: ../mysqld_safe --defaults_file=/path/to/my.cnf --user=mysql & I get the following error: /var/run/mysqld/mysqld.pid: Permission denied rm: cannot unlink `/var/run/mysqld/mysqld.pid': Permission denied Fatal error: Can't remove the pid file: /var/run/mysqld/mysqld.pid ../mysqld_safe: /var/log/mysqld.log: Permission denied Please remove it manually and start ./mysqld_safe again mysqld daemon not started It's as if it is ignoring the "--defaults_file" parameter and using the same my.cnf file that the previous installation has.
Two Servers On Windows And My.cnf/my.ini Groups
I run two MySQL servers on Windows with the two services. I read in the docs that it exists a way to identify the servers in my.cnf by groups and about a tool from Linux to manage the groups. How can I start a server on Windows through the my.cnf/my.ini 's groups?
One (phisical) DB And 2 MySQL Servers
Is it possible, that couple of MySQL servers wcan work simultaniously with one (phisical) DB? My task is following: I have to computers and thay both have one (and the same)å SCIS Raid harddisk. This all together shall be a MySQL Server. have can MySQL be installed so, that DB will be placed in one pace (SCIS Raid), and MySQL works simultaneously on both computers. what concerns MySQL Cluster, as much as i've understood it is designed to store one DB in different places - distributed by cluster nodes. It is too much for me, isn't it
Replication With Multiple Servers In Mysql ?
I want to establish replication between multiple (currently three) servers. Updates/inserts/deletes may happen on all of them. The idea I came up with was to do a "circle"-replication. The problem with this is, that if one server fails the rest may not get updates (until the server is back, obviously). Does anybody have an idea how to establish such a replication in a fail-save manner ? Code:
Apache & MySQL In Differentes Servers.
I've been running a slow Debian machine, with Apache + PHP + MySQL. But, with the time and usage, it's getting to slow to use MySQL. So, now I have another machine (running Debian too), and i've installed MySQL there with all the databases and users moved on to, it works perfectly (with phpmyadmin). What I want is to have the first machine running apache + php, and in the other MySQL. How can i do that ? I've tested making a mysql_connect from a page hosted in the first machine to the other one running MySQL but i didn't work, couldn't connect. I've tried redirecting mysql port to the other machine (iptables) and that didn't work either... Resuming... I want all my users to work with the first machine, they have their accounts in there and all their files, their pages, etc... And the database running in the other machine.
Replication With Multiple Servers In Mysql
I want to establish replication between multiple (currently three) servers. Updates/inserts/deletes may happen on all of them. The idea I came up with was to do a "circle"-replication. The problem with this is, that if one server fails the rest may not get updates (until the server is back, obviously).Does anybody have an idea how to establish such a replication in a fail-save manner?
Replication With Multiple Servers In Mysql
I want to establish replication between multiple (currently three) servers. Updates/inserts/deletes may happen on all of them. The idea I came up with was to do a "circle"-replication. The problem with this is, that if one server fails the rest may not get updates (until the server is back, obviously). Does anybody have an idea how to establish such a replication in a fail-save manner?
Bulk Copy Between Two Mysql Servers
I want to transfer data between two mysql servers running on two between machines and i want to add this option in may application. so can any one tell me throught which commands i can do this.
Two MySQL Servers Share Data
Is it possible to have who MySQL servers contact eachother at a certain time intervul and send data to each other? For example: Mysql A is empty. Mysql B is used for all kinds of things. I want Mysql B to send certain tables to Mysql A every 5-10 minutes.
|
TRACKER
