Re: How can I share the MySQL data and where data and index files are stored
Dear Alec Thanks for the quick response. I am doing some work in High Availabilty. We have two real servers(just 2 PC's) and we want the both PC to run MySQL but uses one common database data file. We have one NAS server, we will keep all the data file there and mount it on local system and try the MySQL, things are half way done I mean I am able to access the data files, table and now its data too but the problem its not writing in file at the same time and there are some problem in closing the files. When I checking the table using 'myisamchk' it show the below results:- * Checking MyISAM file: pi_dispatcher.MYI Data records: 3 Deleted blocks: 0 myisamchk: warning: 1 clients is using or hasn't closed the table properly - check file-size - check key delete-chain - check record delete-chain - check index reference MyISAM-table 'pi_dispatcher.MYI' is usable but should be fixed * My problem is I want the MySQL will write all the data in the file after every command and close the files properly, nothing in buffers and cache. How can we do that, I tried with --flush but its not helping much, is there any good options? regards bhartendu On Sat, 2003-12-06 at 20:15, [EMAIL PROTECTED] wrote: Bhartendu Maheshwari [EMAIL PROTECTED] wrote on 06/12/2003 14:40:29: I know at the time of table creation mysql creates 3 file .frm, .MYD, .MYI and is stored in the path given by --datadir=, I want to know when I call insert row then where is this data goes I mean in which file it stores. I want to shared the database files but when I do this it shares only the table definition not the table data, shows tables are empty. So can anyone please help in sharing the table data. The table definition is in the .frm file, the raw table data in the .MYD file and the indexes in the .MYI file. HOWEVER, it is very dangerous to share these files. MySQL performs extensive internal caching, so that it is rarely possible to know when these files are up-to-date while mysqld is running. Sharing the data files, rather than sharing the mysqld server, is not to be recommended at all. Could you perhaps explain what you are trying to achieve? There is quite likely to be a better way to achieve it. Alec -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED] -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
view warnings?
I'm pretty new to MySQL, but I already like it. Kudos to the developers! I recently did a mysqlimport on a few data files, and it came back with over 4000 warnings. How can I actually see what the warnings were? I'm still not sure what it was upset about... TIA. - Bryan -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: Licence question
You need a license if you sell a product designed specifically for use with MySQL or that requires the MySQL server to function at all. This is true whether or not you provide MySQL for your client as part of your product distribution. Does this mean that I must make all of my web sites non-commercial? (since I use mySQL as my main DBMS) This part is surely not covered by GPL. Especially because GPL doesn't cover commercial aspect of software. GPL Our General Public Licenses are designed to make sure that you GPL have the freedom to distribute copies of free software GPL (and charge for this service if you wish), According to this I can even redistribute mySQL under the terms of GPL and even to get money from such business. Which doesn't comply with the text from the mySQL's website... Ivan -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: what about foreign keys?
Hi, Hi there I have some trouble with MyISAM tables. I have found that supports 3 different types of the 1:1 relation. a)1:1 b)1:1 (Non-Identyfying) c)1:1 (Descedent Obj.) What all these about? What type of tables do u use normally? I'm unsure of what you're trying to ask - perhaps you can explain in more detail? What is it that you're trying to do? What problems are you experiencing? With regards, Martijn Tonies Database Workbench - developer tool for InterBase, Firebird, MySQL MS SQL Server. Upscene Productions http://www.upscene.com -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
log-bin option question
hi, i enable option log-bin in my mysql db server so that i can use the log to recover the transaction which did not backup. But, except for the binary log file hostname-bin, i found another file hostname-bin.index. What is the function of it? Thanks Brian
Re: 4.1.1. - WITH QUERY EXPANSION
Hi! On Dec 04, Mirza wrote: Hi, In 4.1.1. new features there is: * Added `MATCH ... AGAINST( ... WITH QUERY EXPANSION)' and the `ft_query_expansion_limit' server variable. What is WITH QUERY EXPANSION? I found no details in manual. Fixed. WITH QUERY EXPANSION is now documented. Thanks for spotting this. Regards, Sergei -- __ ___ ___ __ / |/ /_ __/ __/ __ \/ / Sergei Golubchik [EMAIL PROTECTED] / /|_/ / // /\ \/ /_/ / /__ MySQL AB, Senior Software Developer /_/ /_/\_, /___/\___\_\___/ Osnabrueck, Germany ___/ www.mysql.com -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: How can I share the MySQL data and where data and index files are stored
Bhartendu Maheshwari [EMAIL PROTECTED] wrote on 07/12/2003 07:56:26: I am doing some work in High Availabilty. We have two real servers(just 2 PC's) and we want the both PC to run MySQL but uses one common database data file. We have one NAS server, we will keep all the data file there and mount it on local system and try the MySQL, things are half way done I mean I am able to access the data files, table and now its data too but the problem its not writing in file at the same time and there are some problem in closing the files. When I checking the table using 'myisamchk' it show the below results:- * Checking MyISAM file: pi_dispatcher.MYI Data records: 3 Deleted blocks: 0 myisamchk: warning: 1 clients is using or hasn't closed the table properly - check file-size - check key delete-chain - check record delete-chain - check index reference MyISAM-table 'pi_dispatcher.MYI' is usable but should be fixed * My problem is I want the MySQL will write all the data in the file after every command and close the files properly, nothing in buffers and cache. How can we do that, I tried with --flush but its not helping much, is there any good options? You can force MySQL to flush its tables to disk with FLUSH TABLES. However, this would, I think, cripple performance. I really don't think MySQL is designed to work this way. The database files are intended to be accessed only by one program. This is what myisamchk is telling you - another program is using the tale it is trying to check, which means that it may well be invalid. What I think you need, and what I use for this same purpose, is replication. This means that you not only have two MySQL's running, but you have two copies of the data on different disks. Since I have two copies of the data, I don't bother to RAID it, which cuts costs back down to nearly the same as doing it with a single block of high-availability disks. There is the further advantage (which I haven't exploited yet) that, which all queries must go through the master, selects can go to the slave(s). Alec -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
string comparison query
Hello All I have two tables Table: 1 +---+--+ | city | zip_code | +---+--+ | New York | 12354| | New York | 12355| | New York | 12356| | New York | 12357| | New York | 12358| | New York | 12359| | New York | 12353| +---+--+ Table: 2 ++ | zip_code | ++ | 12345-1526 | ++ I am trying to work out the query to retrieve city name based on the zip code in the second table. How can I compare two strings? I tried LIKE in my query but it did not work. Thank you in advance for the help. -Alex -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: 4.1.1. - WITH QUERY EXPANSION
On Sun, Dec 07, 2003 at 01:48:08PM +0100, Sergei Golubchik wrote: What is WITH QUERY EXPANSION? I found no details in manual. Fixed. WITH QUERY EXPANSION is now documented. I'm sorry, but I must be blind. Where is it on http://www.mysql.com/doc/en/Fulltext_Search.html ? Did someone forget to update the site? ;) -- Chris -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: string comparison query
On Sun, Dec 07, 2003 at 12:11:21AM -0500, Alex Khordos wrote: I am trying to work out the query to retrieve city name based on the zip code in the second table. How can I compare two strings? I tried LIKE in my query but it did not work. Use SUBSTRING to cut down the extended zipcode to 5 characters, then you can use a standard = comparison: WHERE (SUBSTRING(table2.zip_code,0,5) = table1.zip_code) -- Chris -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: 4.1.1. - WITH QUERY EXPANSION
Hi! On Dec 07, Chris Elsworth wrote: On Sun, Dec 07, 2003 at 01:48:08PM +0100, Sergei Golubchik wrote: What is WITH QUERY EXPANSION? I found no details in manual. Fixed. WITH QUERY EXPANSION is now documented. I'm sorry, but I must be blind. Where is it on http://www.mysql.com/doc/en/Fulltext_Search.html ? Did someone forget to update the site? ;) No, it's done automatically, though not immediately. Please, try again. Regards, Sergei -- __ ___ ___ __ / |/ /_ __/ __/ __ \/ / Sergei Golubchik [EMAIL PROTECTED] / /|_/ / // /\ \/ /_/ / /__ MySQL AB, Senior Software Developer /_/ /_/\_, /___/\___\_\___/ Osnabrueck, Germany ___/ www.mysql.com -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: Licence question
You need a license if you sell a product designed specifically for use with MySQL or that requires the MySQL server to function at all. This is true whether or not you provide MySQL for your client as part of your product distribution. Does this mean that I must make all of my web sites non-commercial? (since I use mySQL as my main DBMS) I believe no, if it is your company's web site and your clients (along with other web surfers) are simply visiting the websites. On the other hand, if your company builds and then sells a web site for another company and the website needs a mysql database to function at all (a dynamic web site that uses mysql specific SQL for example) then i'm not sure that you can get away without making your siurce GPL or buying a commercial MySQL license. According to this I can even redistribute mySQL under the terms of GPL and even to get money from such business. Which doesn't comply with the text from the mySQL's website... You can even modify the MySQL source and sell the modified version of MySQL in excange for money BUT you must do all this under the terms of GPL which means publishing the source code with your modifications. And of course you must find people that are willing to give the money to YOU instead of MySQL AB. Kaarel -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Db design
Hello, I have a db(logs) that I have been working on. This db has tables that are created every month, they are Nov03,Dec03,Jan04, etc.. Each month/table has about 480,000,000 records. Data file is about 80GB the index file is about 40GB. Mysql/apache run on a Dell 2550 4gb ram 2cpu's OS - RH 9. I also Raid 5'ed my Dell which has the mysql 4.0 binarys/apache2.0/php stuff to retrive the data. I also have the data files on a Netapp which is nfs'ed using tcp, it is also on a gigabit network, netstat -i never shows collisions. My tables(MyISAM) have 9 columns, they are all char. type and the tables are fixed. Every night the tables are loaded with the previuos days data.. The table has 6 indexs which are length specified. I'm not that happy with the performance Using myisampack does this improve querys if a table is myisampacked?? Also the table cant be compressed until the new month. Has anyone else had mysql db data files on a Netapp or nfs'ed? and if so could they share there config tips? Also any Mysql my.cnf tips, I basically used the my.huge.cnf file. Thanks, Ron -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Timestamp
Hello, what is the best way to convert a TIMESTAMP value to a value similar to a DATETIME value ?? thx's -- MikemickaloBlezien =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Thunder Rain Internet Publishing Providing Internet Solutions that work! http://www.thunder-rain.com Quality Web Hosting http://www.justlightening.net MSN: [EMAIL PROTECTED] =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: Timestamp
i've used FROM_UNIXTIME with success. you can also supply a format. http://www.mysql.com/doc/en/Date_and_time_functions.html hth jeff Mike Blezien [EMAIL PROTECTED]To: MySQL List [EMAIL PROTECTED] net.net cc: Subject: Timestamp 12/07/2003 12:23 PM Please respond to mickalo Hello, what is the best way to convert a TIMESTAMP value to a value similar to a DATETIME value ?? thx's -- MikemickaloBlezien =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Thunder Rain Internet Publishing Providing Internet Solutions that work! http://www.thunder-rain.com Quality Web Hosting http://www.justlightening.net MSN: [EMAIL PROTECTED] =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED] -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: Licence question
You need a license if you sell a product designed specifically for use with MySQL or that requires the MySQL server to function at all. This is true whether or not you provide MySQL for your client as part of your product distribution. Does this mean that I must make all of my web sites non-commercial? (since I use mySQL as my main DBMS) I believe no, if it is your company's web site and your clients (along with other web surfers) are simply visiting the websites. On the other hand, if your company builds and then sells a web site for another company and the website needs a mysql database to function at all (a dynamic web site that uses mysql specific SQL for example) then i'm not sure that you can get away without making your siurce GPL or buying a commercial MySQL license. According to this I can even redistribute mySQL under the terms of GPL and even to get money from such business. Which doesn't comply with the text from the mySQL's website... You can even modify the MySQL source and sell the modified version of MySQL in excange for money BUT you must do all this under the terms of GPL which means publishing the source code with your modifications. And of course you must find people that are willing to give the money to YOU instead of MySQL AB. Kaarel -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
MySQL installation with SuSE Linux 9.0 and YaST
I am not very experienced with Linux, but SuSE Linux 9.0 and YaST makes it very comfortable for me to install various SW-packages. Therefore I try to install also MySQL with YaST. There are MySQL packages (Version 4.0.15) included in SuSE Linux 9.0 distribution and I try to install the server and the client with YaST. But after installation of these packages with YaST - which is the easy part - one has to configure various parameters for MySQL to work properly e.g. create the database files, define group and user, grant access ... Unfortunately the MySQL-manual (which is a big document) does not give any guidelines for installing with YaST. After several times re- and de-installing mysql and also SuSE-Linux itself I still have troubles to get the server running. Has anyone already done a MySQL-installation with SuSE Linux 9.0 and YaST? Is there any quick installation guide for this task? I would be very happy to get some help. Franz -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: Licence question
So this is getting really confusing now... I have two quite explicit questions to this and I hope there are some experts listening on this list who can answer them. (1) I want to start a (small, non-free) webhosting service and offer webspace with PHP support and a MySQL database account. There will be some standard tariffs that include a database account but I'm going to make them available as extra upgrade, too, for a monthly fee. Do I need a MySQL license for this use? I guess no, but I'm not really sure. (2) If I'm planning to choose MySQL as DBMS for future software I code in my one-man-company, instead of MS Access, I'd need to compile the MySQL client libraries into my application. Another way could be the ODBC interface, but I have no idea about how that works. Then, I'd tell the company, they need a MySQL server. I wouldn't integrate it into my software installation, but could offer the service of installing it on their server, if they can't do it theirselves. Again, do I or the other company need a commercial license for this use? (Of course, they pay for my programs.) I guess yes, but what in detail? Me for the client libraries? I haven't found pricing information on the MySQL website. And the other company for the entire server? Or is this free use (though commercial)? And isn't the client library included in the full license? I'd be thankful about any clear answers on these issues. On Sunday, December 07, 2003 10:32 AM CET, Chuck Gadd wrote: No. The instructor at the MySql training class I attended, who is an employee of MySql AB, specifically mentioned this example. In the case of a website, you are not distributing Mysql or any MySQL library or components to your end users. So no MySql Commercial license is required. (...) http://www.mysql.com/products/licensing.html (...) -- Yves Goergen [EMAIL PROTECTED] Please don't CC me (causes double mails) -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: table corruption with certain (valid) insert statements
Hi! On Nov 27, [EMAIL PROTECTED] wrote: Description: The included sql test script (output of mysqldump 10.2 (create table statement and insertion of 250 records into this table) with added check for table integrity) results in corrupted table and error message 'Found key at page 36864 that points to record outside datafile' when checked with 'check table' or myisamchk. Ok, confirmed and fixed. Actually table was not at all corrupted, but old checking code wasn't recognising new fulltext index tree structure correctly. It's all fixed now - in 4.1.2. Thank you. Regards, Sergei -- __ ___ ___ __ / |/ /_ __/ __/ __ \/ / Sergei Golubchik [EMAIL PROTECTED] / /|_/ / // /\ \/ /_/ / /__ MySQL AB, Senior Software Developer /_/ /_/\_, /___/\___\_\___/ Osnabrueck, Germany ___/ www.mysql.com -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: Licence question
Yves Goergen wrote: (1) I want to start a (small, non-free) webhosting service and offer webspace with PHP support and a MySQL database account. There will be some standard tariffs that include a database account but I'm going to make them available as extra upgrade, too, for a monthly fee. Do I need a MySQL license for this use? I guess no, but I'm not really sure. I do not think so. You can download and install a GPL copy of MySql, and let anyone you want use it. You are not shipping or distributing any part of MySql. Your customers are simply users of your server. (2) If I'm planning to choose MySQL as DBMS for future software I code in my one-man-company, instead of MS Access, I'd need to compile the MySQL client libraries into my application. Another way could be the ODBC interface, but If the software was written for use BY your one-man-company, than no. But if you are selling this software to a client, then yes, they would need a commercial license. The license is per server, so either you or your client could purchase the license. If your client was going to install MySQL on two seperate servers, then two licenses would need to be purchased. If your client already had a commercial MySql license, then they wouldn't need to purchase another license to use your app. for this use? (Of course, they pay for my programs.) I guess yes, but what in detail? Me for the client libraries? I haven't found pricing information Typically, MySQL AB doesn't sell a license for the client libraries. The commercial license is a complete package, server and client. If your intention is to ship a functional MySql app, and just have the client download the GPL server, you would just need to purchase the commercial server. Having the client download/install the server is basically just an attempt at getting around the commercial license. But, early in this thread, the situation where someone might ship an application that could optionally connect up to many different databases. MySql isn't required for the app to run, but the app COULD connect to MySql if it was there. That is a case where a specific CLIENT license might be applicable.On the MySql site, on the Pricing page, it says: MySQL Client Prices For circumstances where a MySQL client license is required, please contact us for a quote. So maybe they can deal with that scenario. -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Specs for a dedicated MySQL server
Hi there, I have been asked to investigate a solution to offer MySQL to our staff. I am not sure how many people will make use of it at this stage. Most people would most likely use it as a backend for message boards And to store information on whatever they are doing. I am sure it will be for web purposes only. I cannot see the need for transactions etc. My employer usually goes for HP DL380 G3 servers. Any tips on redundancy, backup etc? Also, Is there anyone who uses Windows on a Mysql production server? I want to use FreeBSD or Linux but that might not be up to me. What License do I need? Basically we are an ISP for our departments Cheers GUY
Re: MySQL installation with SuSE Linux 9.0 and YaST
Hello Franz, On Sunday 07 December 2003 12:42, Franz Edler wrote: I do not have specific experiences with SuSE 9.0 (stiil waiting for it from my distributor) but I do with previous versions of SuSE (7.x and 8.x), I am not very experienced with Linux, but SuSE Linux 9.0 and YaST makes it very comfortable for me to install various SW-packages. Therefore I try to install also MySQL with YaST. There are MySQL packages (Version 4.0.15) included in SuSE Linux 9.0 distribution and I try to install the server and the client with YaST. But after installation of these packages with YaST - which is the easy part - one has to configure various parameters for MySQL to work properly e.g. create the database files, define group and user, grant access ... Unfortunately the MySQL-manual (which is a big document) does not give any guidelines for installing with YaST. Unfortunately you cannot use YaST to confiture MySQL. Although your may want the server to start at boot time and that is done in the System-Run Level Editor in YaST. After several times re- and de-installing mysql and also SuSE-Linux itself I still have troubles to get the server running. What kind of troubles? Probably this is the place this group can start to help you. Has anyone already done a MySQL-installation with SuSE Linux 9.0 and YaST? Is there any quick installation guide for this task? I think you have done all it could be done using YaST. You need now to jump into the documentation of MySQL. I will suggest that you read the tutorial in section 3 of MySQL's documentation. (URL: http://www.mysql.com/doc/en/Tutorial.html). I would be very happy to get some help. Hope I have been usefull. Franz Bernard -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: Speed difference between boolean full-text searches and full-text searches
Hi!
On Nov 27, Uros Kotnik wrote:
Executing this SQL, takes ~5 sec.
select artists.name, cds.title, tracks.title from artists, tracks, cds
where artists.artistid = tracks.artistid and cds.cdid = tracks.cdid
and MATCH (artists.name) AGAINST ('madonna')
and MATCH (cds.title) AGAINST ('music')
and MATCH (cds.title) AGAINST ('mix')
and MATCH (cds.title) AGAINST ('2001')
limit 1001
and this, ~40 sec.
select artists.name, cds.title, tracks.title from artists, tracks, cds
where artists.artistid = tracks.artistid and cds.cdid = tracks.cdid
and MATCH (artists.name) AGAINST ('madonna' IN BOOLEAN MODE)
and MATCH (cds.title) AGAINST ('music mix 2001' IN BOOLEAN MODE)
limit 1001
Same result but the speed difference is quite a different, why is that ?
What does EXPLAIN show for both queries ?
And are you sure the numbers are correct, the first query - the one
without IN BOOLEAN MODE - is faster ? I would expect the opposite.
Regards,
Sergei
--
__ ___ ___ __
/ |/ /_ __/ __/ __ \/ / Sergei Golubchik [EMAIL PROTECTED]
/ /|_/ / // /\ \/ /_/ / /__ MySQL AB, Senior Software Developer
/_/ /_/\_, /___/\___\_\___/ Osnabrueck, Germany
___/ www.mysql.com
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Re: Lost connection to MySQL server during query - pls help
Thank you so much guys, for your attention and help. I'm upgrading my MySQL to 4.0.16 as suggested. Rgds, Vanessa - Original Message - From: Paul DuBois [EMAIL PROTECTED] To: Jay Blanchard [EMAIL PROTECTED]; miguel solorzano [EMAIL PROTECTED]; Kiky [EMAIL PROTECTED]; [EMAIL PROTECTED] Sent: Saturday, December 06, 2003 12:56 AM Subject: RE: Lost connection to MySQL server during query - pls help At 10:44 -0600 12/5/03, Jay Blanchard wrote: [snip] Please upgrade you MySQL Windows client to 4.0.16 there is a bug with net_read_timeout and net_write_timeout on 4.0.15 that disconnect when the query takes more than 30 secons. [/snip] Can you elaborate on this, we have not seen this problem See the Bugs fixed section of: http://www.mysql.com/doc/en/News-4.0.16.html -- Paul DuBois, Senior Technical Writer Madison, Wisconsin, USA MySQL AB, www.mysql.com Are you MySQL certified? http://www.mysql.com/certification/ -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
delete help
I hope someone can help, I am a newbe as sql and need a some help I can by using this command at mysql prompt |select ACCTSESSIONID from radiuslog where ACCTSESSIONTIME='0';| get a list that I then need to delete but when I used the following I keep get errors delete from radiuslog where ACCTSESSIONID = any (select ACCTSESSIONID from radiuslog where ACCTSESSIONTIME='0'); I can not delete the record by just deleting the record with the 0 ACCTSESSIONTIME as this would only delete the Stop and not the start record with the same ACCTSESSIONID from this radiuslog http://netwinsite.com/dbabble/ -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: delete help
Are you aware that you are using a nested sql query which isn't available until version 4.1? Try splitting the delete into multiple steps 1) populate a temp table with the id's you want to delete then 2) use the temp table data to delete the rows. - Original Message - From: tech [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Monday, December 08, 2003 3:16 AM Subject: delete help I hope someone can help, I am a newbe as sql and need a some help I can by using this command at mysql prompt |select ACCTSESSIONID from radiuslog where ACCTSESSIONTIME='0';| get a list that I then need to delete but when I used the following I keep get errors delete from radiuslog where ACCTSESSIONID = any (select ACCTSESSIONID from radiuslog where ACCTSESSIONTIME='0'); I can not delete the record by just deleting the record with the 0 ACCTSESSIONTIME as this would only delete the Stop and not the start record with the same ACCTSESSIONID from this radiuslog http://netwinsite.com/dbabble/ -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED] -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: How can I share the MySQL data and where data and index files are stored
I accepted the performance issue but I don't want two separate copies of data, I only want on every SQL command the MySQL daemon reads/writes from/in the file. How can I force MySQL daemon to do the same? regards bhartendu On Sun, 2003-12-07 at 18:51, [EMAIL PROTECTED] wrote: Bhartendu Maheshwari [EMAIL PROTECTED] wrote on 07/12/2003 07:56:26: I am doing some work in High Availabilty. We have two real servers(just 2 PC's) and we want the both PC to run MySQL but uses one common database data file. We have one NAS server, we will keep all the data file there and mount it on local system and try the MySQL, things are half way done I mean I am able to access the data files, table and now its data too but the problem its not writing in file at the same time and there are some problem in closing the files. When I checking the table using 'myisamchk' it show the below results:- * Checking MyISAM file: pi_dispatcher.MYI Data records: 3 Deleted blocks: 0 myisamchk: warning: 1 clients is using or hasn't closed the table properly - check file-size - check key delete-chain - check record delete-chain - check index reference MyISAM-table 'pi_dispatcher.MYI' is usable but should be fixed * My problem is I want the MySQL will write all the data in the file after every command and close the files properly, nothing in buffers and cache. How can we do that, I tried with --flush but its not helping much, is there any good options? You can force MySQL to flush its tables to disk with FLUSH TABLES. However, this would, I think, cripple performance. I really don't think MySQL is designed to work this way. The database files are intended to be accessed only by one program. This is what myisamchk is telling you - another program is using the tale it is trying to check, which means that it may well be invalid. What I think you need, and what I use for this same purpose, is replication. This means that you not only have two MySQL's running, but you have two copies of the data on different disks. Since I have two copies of the data, I don't bother to RAID it, which cuts costs back down to nearly the same as doing it with a single block of high-availability disks. There is the further advantage (which I haven't exploited yet) that, which all queries must go through the master, selects can go to the slave(s). Alec -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED] -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
Re: delete help
Thank you for taking the time to reply I am using version 4.1 as can be seen from the out put below mysql Ver 13.5 Distrib 4.1.0-alpha, for portbld-freebsd5.1 (i386) Also I am unsure of the syntax for what you suggest Are you aware that you are using a nested sql query which isn't available until version 4.1? Try splitting the delete into multiple steps 1) populate a temp table with the id's you want to delete then 2) use the temp table data to delete the rows. - Original Message - From: tech [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Monday, December 08, 2003 3:16 AM Subject: delete help I hope someone can help, I am a newbe as sql and need a some help I can by using this command at mysql prompt |select ACCTSESSIONID from radiuslog where ACCTSESSIONTIME='0';| get a list that I then need to delete but when I used the following I keep get errors delete from radiuslog where ACCTSESSIONID = any (select ACCTSESSIONID from radiuslog where ACCTSESSIONTIME='0'); I can not delete the record by just deleting the record with the 0 ACCTSESSIONTIME as this would only delete the Stop and not the start record with the same ACCTSESSIONID from this radiuslog http://netwinsite.com/dbabble/ -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe: http://lists.mysql.com/[EMAIL PROTECTED] http://netwinsite.com/dbabble/ -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/[EMAIL PROTECTED]
