index for multiple tables in mysql

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I am using mysql. I need to search the information fron many tables.
For that, please let me know how to create index for all the tables?

UPDATE from OP (moved here from other place):
I want to search a particular column's values. For that purpose I use many tables and join them by using join queries and display the rows and columns related to my search.

My question is this: I have thousands of records in a MySQL database and when I click the search button the process slows down. For that purpose I want to use an index on the table.

Please let me know how to use an index on multiple tables to speed up the search process.
Thank you.

Posted 3-Mar-11 1:03am

shanthikalai

Updated 3-Mar-11 3:52am

Sandeep Mewara

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Dylan Morley · Answer 1 · 2011-03-03T01:26:00

Have a read of this article, it will help you

http://www.databasejournal.com/features/mysql/article.php/1382791/Optimizing-MySQL-Queries-and-Indexes.htm[^]

So, you need to check your SQL statements. Only then will you know what indexes you should be creating on what tables so that your search SQL is optimised correctly.