From: Michael Fuhr <mike@fuhr.org>
To: Marc G. Fournier <scrappy@postgresql.org>
Cc: pgsql-sql@postgresql.org
Subject: Re: ARRAYs and INDEXes ...
Date: Mon, 15 Aug 2005 23:30:19 -0600
Message-ID: <20050816053019.GA6387@winnie.fuhr.org> (raw)
In-Reply-To: <20050816014906.G1002@ganymede.hub.org>
References: <20050816014906.G1002@ganymede.hub.org>
On Tue, Aug 16, 2005 at 01:54:13AM -0300, Marc G. Fournier wrote:
>
> CREATE TABLE customers (
> customer_id SERIAL,
> monthly_balance DECIMAL(7,2)[12]
> );
>
> Is it possible to create an INDEX on customers.monthly_balance such that I
> could do something like:
>
> SELECT * FROM customers WHERE monthly_balance[6] = 0.00;
You could use expression indexes, one per month:
CREATE INDEX customers_mb_1_idx ON customers ((monthly_balance[1]));
CREATE INDEX customers_mb_2_idx ON customers ((monthly_balance[2]));
etc.
> SELECT * FROM customers WHERE 0.00 = any (monthly_balance);
Not sure about that one.
--
Michael Fuhr
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To: pgsql-sql@postgresql.org
Cc: mike@fuhr.org, scrappy@postgresql.org
Subject: Re: ARRAYs and INDEXes ...
In-Reply-To: <20050816053019.GA6387@winnie.fuhr.org>
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