MySQL - Update the same column twice

Posted by uzioriluzan on Stack Overflow See other posts from Stack Overflow or by uzioriluzan
Published on 2010-06-08T11:10:59Z Indexed on 2010/06/08 11:22 UTC
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mysql

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update

Hello,

I need to update a column in a mysql table. If I do it in two steps as below, is the column "col" updated twice in the disk ?

update table SET col=3*col, col=col+2;

or is it written only once as in :

update table SET col=3*col+2;

Thanks

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