Sorry, I couldn't test as my actual query is more complex and uses a
view. The plan generated by Firebird refers to indexes within the view,
but when I try to use it with the query I get an error message that the
index is for a table that is not in the query (of course not, it's
hidden within the view).

It turns out I don't need to specify a plan. If I remove the problem
constraint (which was to return results on only one customer) it returns
100 times quicker, and it's easy within Crystal Reports to only display
the customer I care about.

-----Original Message-----
From: firebird-support@yahoogroups.com
[mailto:firebird-support@yahoogroups.com] On Behalf Of Vlad Horsun
Sent: Thursday, January 04, 2007 4:03 PM
To: firebird-support@yahoogroups.com
Subject: Re: [firebird-support] Specifying multiple plans

> Select statements generate multiple plans, if the select contains
> further selects.
> I need to specify my own plan for such a select statement, but I get
> an error on the second plan:
>
> SELECT
> *
> FROM
> FEE
> WHERE
> NOT EXISTS (SELECT 1 FROM FI WHERE FO = FEE.FUM); PLAN (FEE I_GOLD)
> PLAN (FI I_EGG) <-- Token unknown - char 1 PLAN

Try

SELECT
*
FROM
FEE
WHERE
NOT EXISTS (SELECT 1 FROM FI WHERE FO = FEE.FUM PLAN (FI I_EGG) )
PLAN (FEE I_GOLD)

> Also, would an ORDER BY go after or before PLAN?

I don't remember - but you can try both by yourself ;)

Regards,
Vlad


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