Getting started into mySQL

MySQL

Installation

• LAMP or XAMPP• MySQL Essential

WEBSITE

• (http://www.mysql.com/) –Provides latest information

Theme

• Create a simple relational database in MySQL.

• Insert, update and delete data the tables.

• Create queries using basic and advanced SELECT statements

• Perform join operations on relational tables

• Use aggregate functions in SQL

• Write subqueries

• Create views of the database

Starting MySQL

• Before starting into MySQL, you must obtain a user ID and a password created by your database administrator in order to log on to the MySQL RDBMS.

• How you connect to the MySQL database depends on how the MySQL software was installed on your server

To start MySQL you would:

• 1. Select the Start button • 2. Select All Programs and then MySQL • 3. Select MySQL Server 5.0 • 4. Click on the MySQL Command line client

• 1. Goto search-> Type cmd -> choose the appropriate location(where the user originally save the mySQL package in the local hard disk)

Important Notice

• Before login into the mySQL start the Apache and mySQL service in the server(XAMPP)

Getting Started into mySQL

Where:

• -u – user

• -p – identified by password

• Mysql –h host –u user -p

• Mysql> \h -help

• sql> help contents - A full list of help topics available through the command line can be found

• Example

• mysql> help Data Definition;

• You asked for help about help category: "Data Definition"

• For more information, type 'help <item>', where <item> is one of the following

• topics:

• ALTER DATABASE

• ALTER EVENT

• ALTER FUNCTION

• ALTER PROCEDURE

• ALTER SERVER

• ALTER TABLE

• ALTER VIEW DROP PROCEDURE

• DROP SERVER

• DROP TABLE

• DROP TRIGGER

• DROP VIEW

• RENAME TABLE

• TRUNCATE TABLE

• mysql>

Quit

• Mysql> Quit• (OR)• Ctrl+D

• mysql> SELECT VERSION(), CURRENT_DATE;• +-----------------+--------------+• | VERSION() | CURRENT_DATE |• +-----------------+--------------+• | 5.1.2-alpha-log | 2005-10-11 |• +-----------------+--------------+

• mysql> SELECT VERSION(); SELECT NOW();• 6• +-----------------+• | VERSION() |• +-----------------+• | 5.1.2-alpha-log |• +-----------------+• 1 row in set (0.00 sec)• +---------------------+• | NOW() |• +---------------------+• | 2005-10-11 15:15:00 |• +---------------------+• 1 row in set (0.00 sec)

• mysql> SELECT USER()• -> ;• +---------------+• | USER() |• +---------------+• | james@localhost |• +---------------+