Category: MySQL-Articles

Okay! So here we will use Load Data syntax to load file into MySQL Server in a Stored procedure. Yep! It’s a workaround. Download MySQL UDF: [root@localhost kedar]# wget http://www.mysqludf.org/lib_mysqludf_sys/lib_mysqludf_sys_0.0.3.tar.gz [refer: http://www.mysqludf.org/] Extract and Install: [root@localhost kedar]# tar -xzvf lib_mysqludf_sys_0.0.3.tar.gz install.sh lib_mysqludf_sys.c lib_mysqludf_sys.html lib_mysqludf_sys.so lib_mysqludf_sys.sql Makefile [root@localhost kedar]# sh install.sh Compiling the MySQL UDF gcc […]

Nagios is a powerful monitoring system and here we will learn how to monitor MySQL through Nagios. We will be installing Nagios, required plugins and configuring it to monitor MySQL Database Server. Let’s unleash the power step by step: Installing and configuring Nagios Step-1 : Install required stuff: yum install httpd yum install gcc yum […]

Recently I happen to install MySQL on Mac OS X (Darvin Kernel).  Below are the quick 5 steps to accomplish the task. Step 1: Check Mac Version Very first step is to verify the Mac OS X’s current version to decide MySQL Installation file to be downloaded. For example for Mac version: 10.4 you should […]

Moving, copying or renaming database is a very basic activity. I have just noted a few commands for reference to quickly follow the required operation. 1. Rename database on Linux Machine: A. Use RENAME DATABASE Command [MySQL 5.1]. RENAME DATABASE db_name TO new_db_name; B. mysql -uroot -pPASSWORD -e “drop database if exists NEW-DB-NAME; create database […]

This post covers the basic information of files that MySQL Server uses / creates for various tasks. my.cnf : It is the main configuration file for MySQL. You may find it under base directory in windows or under /etc/. .sock : mysqld creates a socket for programs to connect to and notes in this file. […]

In mysql we have — , /* and /*! comments.  This post is mainly about very basic c-style comments. /*! : C-Style comments in MySQL We normally see comments in MySQLdump as follows: /*!40000 ALTER TABLE `a` DISABLE KEYS */; Or /*!50013 DEFINER=`root`@`localhost` SQL SECURITY DEFINER */ These are actually C-Style comments which has embeded […]

There are set of commands that MySQL itself interprets. You may use “help” or “\h” at the mysql> prompt to list them. Below are the 5 most useful MySQL Command Options. 1. \# OR rehash: Enable automatic rehashing. Do you have long table names, you find it difficult to remember tablenames or you’re just as […]

Loading csv to MySQL or any delimited data files to MySQL database is a very common task frequently questioned about and almost every-time LOAD DATA INFILE come into rescue. In this article I will explain you about all different scenarios and explain you how to get the data loaded directly from csv to MySQL database […]

I’m having RHEL 5 (32-bit) and MySQL-5. I was trying to check how much is the Memory Utilization limits for MySQL 5 on 32bit OS. We can easily calculate the maximum capacity of the address space is 2^32 bytes and that is where these limits come from. * For MYSQL 5.0: Following are memory (storage) […]

Creating scheduled backup using administrator is an easy task. Follow the GUI and you’re done. But I observed something different! MySQL Version: 5.0.83 Community MySQL Administrator: 1.2.17 Machine: Intel P4, Windows XP, Enough RAM 🙂 Logs: General, Error & irrelevant here though Slow query. Prologue: Administrator performs scheduled backup properly in normal scenario. What I […]