Does the order of columns in a query matter?

When selecting columns from a MySQL table, is performance affected by the order that you select the columns as compared to their order in the table (not considering indexes that may cover the columns)?

For example, you have a table with rows uid, name, bday, and you have the following query.

SELECT uid, name, bday FROM table

Does MySQL see the following query any differently and thus cause any sort of performance hit?

SELECT uid, bday, name FROM table
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задан OMG Ponies 7 May 2011 в 01:55
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