Re: [exim] optimizing a condition

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著者: Heiko Schlittermann
日付:  
To: exim-users
題目: Re: [exim] optimizing a condition
Hi,

Cyborg <cyborg2@???> (Mo 04 Jul 2016 11:08:23 CEST):
> Hi,
>
> does anyone see a way to optimize one condition away without changing
> the SQL ?
>
>           condition = ${if !eq{TXTA}{${lookup mysql {SELECT --SQL-- }}} {1}}
>           condition = ${if !eq{TXTB}{${lookup mysql {SELECT --SQL-- }}} {1}}


Exim caches the last lookup and reuses it if it looks the same.
But *any* lookup that is not identical to the lookup done before
invalidates the cache.

>     set acl_m9 = ${lookup mysql {SELECT --SQL-- }}
>     condition = ${if !eq{TXTA}{$acl_m9} {1}}
>     condition = ${if !eq{TXTB}{$acl_m9} {1}}


Yes, should work.

> Also an option would be something like this : any REGEX available at
> that point?
>
>     condition = ${if !Regexp{(TXTA|TXTB)}{ SQL } {1}}


Check for the "match" condition.

    condition = ${if match{ SQL }{TXT(A|B)}}



    Best regards from Dresden/Germany
    Viele Grüße aus Dresden
    Heiko Schlittermann
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