Re: Problem with estimating pages for a table

From: Euler Taveira de Oliveira <euler(at)timbira(dot)com>
To: cristina(dot)maier(at)yahoo(dot)com
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: Problem with estimating pages for a table
Date: 2009-05-13 21:45:38
Message-ID: 4A0B3F82.9060202@timbira.com
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Cristina M escreveu:
> - for table t2(l_orderkey int, l_partkey int, l_quantiy, l_tax,
> l_extendedprice, l_discount) I got an error of 42 %.
>
I suspect you have NULLs in your table; they're stored as bitmaps, so they use
little space.

--
Euler Taveira de Oliveira
http://www.timbira.com/

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