mysql query optimization

Posted by vamsivanka on Stack Overflow See other posts from Stack Overflow or by vamsivanka
Published on 2010-05-07T02:46:13Z Indexed on 2010/05/07 2:48 UTC
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mysql

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query

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optimization

I would need some help on how to optimize the query.

select * from transaction where id < 7500001 order by id desc limit 16

when i do an explain plan on this - the type is "range" and rows is "7500000" According to the some online reference's this is explained as, it took the query 7,500,000 rows to scan and get the data.

Is there any way i can optimize so it uses less rows to scan and get the data. Also, id is the primary key column.

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