select col vs select ExtractValue(col) performance

[Jakub Wisniewski]

Hi,

Are there here any test/enchmark results on MySQL performance of 5.1's built-in XML functions done by the developers?

Sth like:

select COL from T where COND order by COL collation desc

vs.

select ExtractValue(COL,'/root/node') as COL from T where COND order by COL COLLATION desc

I'd most interested in.

Regards,

Jakub Wiśniewski
Custom Internet Solutions
http://jrobin.net/en