In Linux, there is no command which will rename a user account. If you make a mistake creating a user account, user changes their name or if user does not like his user name, there is no real easy way of going and making the change. Only thing I know you can do is [...]

Creating table symlinks in MySQL is very easy and it is probably one of the features a lot of MySQL users overlook or never think about. You may ask, why would I want to use symlinks? Some of the reasons you would want symlinks is if you are running low on disk space on [...]

Here is a sample table you can create to test following problem/solution on:
CREATE TABLE `t1` (
`a` char(1) default NULL,
`b` smallint(6) default NULL
);
insert into t1 values (’y',’1′);
I have a table t1 which has column a and b, I want column a to be updated to ‘n’ when column b = 0. Here is the first version [...]

Setting up master-master replication in MySQL is very similar to how we set up master/slave replication. You can read up about how to setup master/slave replication in my previous post: How to set up master/slave replication in MySQL. There is obviously pros and cons about using master/master replication. But this is not [...]

Before we go into how to set up master-slave replication in MySQL, let us talk about some of the reasons I have set up master-slave replication using MySQL.
1) Offload some of the queries from one server to another and spread the load: One of the biggest advantages to have master-slave set [...]