[Monetdb-developers] about MAL optimize

Fabian Groffen Fabian.Groffen at cwi.nl
Wed Aug 11 09:42:26 CEST 2010


On 11-08-2010 15:25:15 +0800, kun ren wrote:
>    Recently,I am intersting in MAL optimize,and have read the manual of the
> MAL optimize, but it is so long, Possible if we want to use mal optimize ,we
> must  degignation the optimize  consideration,  such as alias removal,
> constant expression,join path optimizer;And then I dedug the MonetDB,but
> default it don't use any optimize.so what do you think about the mal
> optimize?

It is only used when you use SQL.  The sql_optimizer setting in
monetdb5.conf controls which optimisers are run, which by default are
quite a few.




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