Update just some of the fields
In MySQL when i execute full update query, all fields will be updated or no? It means, which fields that have not been changed will not be updated?! e.g. current values for table named 'test', i want to update just desc: id, name, desc 1, test1, test2 update test set name='test1', desc='test10' where id=1; I use one framework that still does not implement update just changed fields, i know that i can use this: update test set desc='test10' where id=1; any ideas?!
Re: SLAVE aware of binary log file switch?
Am 17.06.2013 13:11, schrieb Mihamina Rakotomandimby: Say the binary log file (on the master) has reached its maximum size, so that it has to switch to a +1 binary log file: does he inform the SLAVE of that switch so that the SLAVE updates its information about the MASTER status? The master does not inform the slave via an immediate communication channel, but the slave knows how to keep up because the end of the binary log file contains continuation information - i.e. the name of the next log file to fetch. Denis -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql
MySQL 5.6.11 Missing MySQL Client
Hello Everyone, We installed mysql 5.6.11 from source without server, and was wondering what happened to the mysql command? /usr/local/mysql/bin/ innochecksummysql_waitpid replace resolveip my_print_defaults perror resolve_stack_dump Kind Regards, Nick. -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql
SLAVE aware of binary log file switch?
Hi all, Given a MASTER and a SLAVE. When launching the SLAVE, it knows about the binary log file used by the MASTER and the position in that log file. Say the binary log file (on the master) has reached its maximum size, so that it has to switch to a +1 binary log file: does he inform the SLAVE of that switch so that the SLAVE updates its information about the MASTER status? I'm readind the documentation http://dev.mysql.com/doc/refman/5.1/en/binary-log.html and dont see what is happening while slaving. Thank you. -- RMA.
Re: SLAVE aware of binary log file switch?
On 2013-06-17 14:43, Denis Jedig wrote: Say the binary log file (on the master) has reached its maximum size, so that it has to switch to a +1 binary log file: does he inform the SLAVE of that switch so that the SLAVE updates its information about the MASTER status? The master does not inform the slave via an immediate communication channel, but the slave knows how to keep up because the end of the binary log file contains continuation information - i.e. the name of the next log file to fetch. OK. I'm sorry I was mislead by the output of: [mihamina@prod-ebidual ~]$ echo SHOW SLAVE STATUS \G; | mysql -uroot -px | grep 'Slave_' Slave_IO_State: Waiting for master to send event -- this Slave_IO_Running: Yes Slave_SQL_Running: Yes -- RMA.
Re: Update just some of the fields
2013/06/17 11:38 +0430, Sayyed Mohammad Emami Razavi update test set desc='test10' where id=1; _That_ is UPDATE! It is the only means of changing, but neither inserting nor deleting, a record. The other fields are left the same. MySQL also tracks whether it is an actual change; this is reflected in the client message Rows matched: ? Changed: ? Warnings: ? . The number after Changed: is the number of records where the new value really differs from the old. -- MySQL General Mailing List For list archives: http://lists.mysql.com/mysql To unsubscribe:http://lists.mysql.com/mysql
RE: SLAVE aware of binary log file switch?
Waiting for master to send event -- just means that nothing is being replicated at the moment. The Yes+Yes says that things are running. Seconds_behind_master = 0 says that the Slave is essentially caught up. NULL means something is broken. 0 _may_ indicate a problem, or it may indicate a brief delay. -Original Message- From: Mihamina Rakotomandimby [mailto:miham...@rktmb.org] Sent: Monday, June 17, 2013 5:35 AM To: mysql@lists.mysql.com Subject: Re: SLAVE aware of binary log file switch? On 2013-06-17 14:43, Denis Jedig wrote: Say the binary log file (on the master) has reached its maximum size, so that it has to switch to a +1 binary log file: does he inform the SLAVE of that switch so that the SLAVE updates its information about the MASTER status? The master does not inform the slave via an immediate communication channel, but the slave knows how to keep up because the end of the binary log file contains continuation information - i.e. the name of the next log file to fetch. OK. I'm sorry I was mislead by the output of: [mihamina@prod-ebidual ~]$ echo SHOW SLAVE STATUS \G; | mysql -uroot - px | grep 'Slave_' Slave_IO_State: Waiting for master to send event -- this Slave_IO_Running: Yes Slave_SQL_Running: Yes -- RMA.
