Re: Waiting for the solution..
In MySql execute the GRANT command to give the necessary permissions to user@nthost, something like as follows (change the command per your needs, for different options, look up documentation on mysql.com ) GRANT all on *.* to 'username'@'hostname' identified by 'password'. You can use IP too, instead of a hostname Generally, you would want just select, update, insert, delete instead of all DSN.* instead of *.*, but it depends on you requirements. once you have done that, on the NT end, you will need to configure VB to connect via MyODBC, I am not familiar with VB much, but I have been able to get this done via MS Access so VB should be the same. You will need to configure MyODBC (under system DSN, maybe) to use the correct database name, username and password. Regards, Bhavin. Regards, Bhavin. - Original Message - From: Subhash [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Saturday, June 08, 2002 1:48 AM Subject: Waiting for the solution.. Dear there, I'm Subhash from Bangalore(India). Can we retrieve the data stored in mySQL database installed on Linux platform using VB forms installed on WIN-NT. If so how? Kindly help me about this in the earliest. I've also installed the required odbc drivers (MYODBC 3.51) for Windows by downloading from mysql.com portal. Still i could'nt connect to it. Waiting for your solutions. Regards. subhash (my email id: [EMAIL PROTECTED]) _ Click below to visit monsterindia.com and review jobs in India or Abroad http://monsterindia.rediff.com/jobs - 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 - 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
Re: Not using indexes???
* Mysql, after reading the query, decides wether using an index would be better than just a table row scan. Hence, it's MySql's decision * You can force MySql to use indexes using the 'using index' option with the select query.(MySql 'might' still reject the force, not sure of the circumstances). * The first 2 queries pretty much won't use index because it is not a specific value that you are asking MySql to search for but just a NOT NULL, very different for '=' or even ranges. * The final query is a Group By and hence it will need to use the index to group by the Values that it is going to show you. * The third query is a bit confusing. I don't think it should be using indexes, just as the second one but it is due to some reason, can't answer that one but instead I would also suggest that you try this: explain Select sum(actual_revenue) From Click where sequence_log_id = specifysomevalue; That should use indexes since you are searching for something specific. You can also try ranges and it should still use indexes ( a rule of thumb is that if the return result is more than 30% of the total number of records, it's faster to do just a full table scan so it still might not use it if you specify a very big range) Regards, Bhavin Vyas. - Original Message - From: Jon Frisby [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Friday, June 07, 2002 6:07 PM Subject: Not using indexes??? Please excuse me if this is something blindingly obvious, but having now encountered this in several circumstances, but I have been unable to find a resolution in the docs (perhaps I just missed it?). In actuality we encountered the problem when doing some nasty joins, but the problem seems really to be more fundamental as we've reproduced the problem without a join... We're using MySQL 4.0.1 on Linux (from the RPM). We have an InnoDB table, 'click' with 6 or so indexes on it. Notably: -`id` is the PRIMARY KEY. -`sequence_log_id` has a non-unique index. The problem is when we do queries that involve columns *not* available directly from the index, MySQL absolutely refuses to use an index for looking up rows. See the output from EXPLAIN for each of these queries: SELECT COUNT(*) FROM click WHERE sequence_log_id IS NOT NULL; +---+---+-+-+-+--+-- --+-+ | table | type | possible_keys | key | key_len | ref | rows | Extra | +---+---+-+-+-+--+-- --+-+ | click | index | sequence_log_id | sequence_log_id | 5 | NULL | 939470 | where used; Using index | +---+---+-+-+-+--+-- --+-+ SELECT COUNT(*), SUM(actual_revenue) FROM click WHERE sequence_log_id IS NOT NULL; +---+--+-+--+-+--++- ---+ | table | type | possible_keys | key | key_len | ref | rows | Extra | +---+--+-+--+-+--++- ---+ | click | ALL | sequence_log_id | NULL |NULL | NULL | 939470 | where used | +---+--+-+--+-+--++- ---+ (`actual_revenue` isn't part of the index. SELECT COUNT(*), SUM(id) FROM click WHERE sequence_log_id IS NOT NULL; +---+---+-+-+-+--+-- --+-+ | table | type | possible_keys | key | key_len | ref | rows | Extra | +---+---+-+-+-+--+-- --+-+ | click | index | sequence_log_id | sequence_log_id | 5 | NULL | 939470 | where used; Using index | +---+---+-+-+-+--+-- --+-+ (Since it's an InnoDB table, a secondary index uses the PK as a reference for the index.) SELECT COUNT(*), SUM(actual_revenue) FROM click WHERE sequence_log_id IS NOT NULL GROUP BY sequence_log_id; +---+---+-+-+-+--+-- --++ | table | type | possible_keys | key | key_len | ref | rows | Extra | +---+---+-+-+-+--+-- --++ | click | index | sequence_log_id | sequence_log_id | 5 | NULL | 939469 | where used | +---+---+-+-+-+--+-- --++ (The key isn't actually *used* here, as demonstrated by the query taking a long time to run... Of the ~970k rows in click, about 2800 have sequence_log_id IS NOT NULL.) My question is: Is this a bug? A feature? What can I do to get MySQL to use the sequence_log_id index? -JF
Re: Error in shared libraries
Yes, regarding the $PATH my bad... putting it in /usr/lib should have resolved it(since it's generally in LD_LIBRARY_PATH). Besides that, as Ritu suggested, it should be in LD_LIBRARY_PATH variable in the environment not $PATH. Not familiar with /etc/ld.conf, that might work too. Bhavin. - Original Message - From: Chris Knipe [EMAIL PROTECTED] To: [EMAIL PROTECTED]; Charitha [EMAIL PROTECTED]; [EMAIL PROTECTED] Sent: Thursday, June 06, 2002 9:23 PM Subject: Re: Error in shared libraries Doesn't this need to be in ld's path? /etc/ld.conf ? I'm not to sure Not on *nix at the moment, but I believe the proper way to add it would be through /etc/ld.conf and running ldconfig to update the paths. Kind Regards, Chris Knipe MegaLAN Corporate Networking Services Tel: +27 21 854 7064 Cell: +27 72 434 7582 - Original Message - From: [EMAIL PROTECTED] To: Charitha [EMAIL PROTECTED]; [EMAIL PROTECTED] Sent: Friday, June 07, 2002 9:14 AM Subject: Re: Error in shared libraries or aalternatively, u can also do a echo $PATH and put the library in one of those path. eg: /usr/lib or someplave OR do PATH=$PATH:/usr/lib/mysql, if it work, put that command in your '.profile' so that it loads every time you log in. - Original Message - From: Chris Knipe [EMAIL PROTECTED] To: Charitha [EMAIL PROTECTED]; [EMAIL PROTECTED] Sent: Thursday, June 06, 2002 9:00 PM Subject: Re: Error in shared libraries It may be looking for the library in a different location, such as /usr/local/lib/mysql ldd application binary Should show you where exactly it is looking for the library, then you can try to symlink the library to that location. Alternatively, recompiling the application may also help. Kind Regards, Chris Knipe MegaLAN Corporate Networking Services Tel: +27 21 854 7064 Cell: +27 72 434 7582 - Original Message - From: Charitha [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Friday, June 07, 2002 5:46 AM Subject: Error in shared libraries Hello all, I am having one application in which i am using mysql as database. When i run my application it gives following error. error:loading shared libraries libmysqlclient.so.10 (No such file or directory) I am having that library in /usr/lib/mysql/ Still it gives this error.Why is it so..? How to solve this problem? Thanks and regards, Charitha C. -- - 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 - 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 - 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 - 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
Re: newbie ? Load Data in MySQL
No, there is no way to trigger an insert automatically when you are doing a LOAD DATA (bulk load). You will need another flat file with the appropriate info and load that in as well...just as you have thought of. - Original Message - From: Dion Wickander [EMAIL PROTECTED] To: MySQL Help [EMAIL PROTECTED] Sent: Friday, June 07, 2002 8:12 AM Subject: newbie ? Load Data in MySQL I am working on a project were the customer info will be uploaded to a MySQL database from multiple sources with a customer ID already assigned to them and this data needs to be related to other tables with related info. OK I have an auto increment column set up as the primary key to keep track of the customer records that are being created and using it to relate the data to my other tables. here is the question is their a built in or automated way to load data in bulk to the customer table and with each record added to that table create a record in the other related tables with the correct primary key? or would this need to be a record by record individual insert to create the corresponding records. - my thinking is that I may have to load data in bulk, setting a flag for the newly uploaded data. Then do a select that finds the flags and then creating the new records in the related tables based on the found set. then of course removing the flags after all other tables are updated. I was just wondering if their is a built in mechanism for something like this? thanks in advance. MySQL 3.23.39 - 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 - 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
Re: Error in shared libraries
or aalternatively, u can also do a echo $PATH and put the library in one of those path. eg: /usr/lib or someplave OR do PATH=$PATH:/usr/lib/mysql, if it work, put that command in your '.profile' so that it loads every time you log in. - Original Message - From: Chris Knipe [EMAIL PROTECTED] To: Charitha [EMAIL PROTECTED]; [EMAIL PROTECTED] Sent: Thursday, June 06, 2002 9:00 PM Subject: Re: Error in shared libraries It may be looking for the library in a different location, such as /usr/local/lib/mysql ldd application binary Should show you where exactly it is looking for the library, then you can try to symlink the library to that location. Alternatively, recompiling the application may also help. Kind Regards, Chris Knipe MegaLAN Corporate Networking Services Tel: +27 21 854 7064 Cell: +27 72 434 7582 - Original Message - From: Charitha [EMAIL PROTECTED] To: [EMAIL PROTECTED] Sent: Friday, June 07, 2002 5:46 AM Subject: Error in shared libraries Hello all, I am having one application in which i am using mysql as database. When i run my application it gives following error. error:loading shared libraries libmysqlclient.so.10 (No such file or directory) I am having that library in /usr/lib/mysql/ Still it gives this error.Why is it so..? How to solve this problem? Thanks and regards, Charitha C. -- - 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 - 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 - 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
