Which MySql line is faster:

Posted by Camran on Stack Overflow See other posts from Stack Overflow or by Camran
Published on 2010-04-20T17:39:02Z Indexed on 2010/04/20 17:43 UTC
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php

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mysql

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database

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sql

I have a classified_id variable which matches one document in a MySql table.

I am currently fetching the information about that one record like this:

   SELECT * FROM table WHERE table.classified_id = $classified_id

I wonder if there is a faster approach, for example like this:

   SELECT 1 FROM table WHERE table.classified_id = $classified_id

Wont the last one only select 1 record, which is exactly what I need, so that it doesn't have to scan the entire table but instead stops searching for records after 1 is found?

Or am I dreaming this?

Thanks

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