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Re: what is the maximum number of rows in a table in postgresql 8.1

From: Bill Moran <wmoran(at)collaborativefusion(dot)com>
To: "sathiya psql" <sathiya(dot)psql(at)gmail(dot)com>
Cc: "Craig Ringer" <craig(at)postnewspapers(dot)com(dot)au>, pgsql-performance(at)postgresql(dot)org
Subject: Re: what is the maximum number of rows in a table in postgresql 8.1
Date: 2008-03-25 13:34:40
Message-ID: 20080325093440.1bcd47e1.wmoran@collaborativefusion.com (view raw or flat)
Thread:
Lists: pgsql-performance
In response to "sathiya psql" <sathiya(dot)psql(at)gmail(dot)com>:

> EXPLAIN ANALYZE SELECT count(*) from call_log_in_ram ;
>                                                             QUERY
> PLAN
> ----------------------------------------------------------------------------------------------------------------------------------
>  Aggregate  (cost=90760.80..90760.80 rows=1 width=0) (actual time=
> 6069.373..6069.374 rows=1 loops=1)
>    ->  Seq Scan on call_log_in_ram  (cost=0.00..89121.24 rows=3279119
> width=0) (actual time=0.012..4322.345 rows=3279119 loops=1)
>  Total runtime: 6069.553 ms
> (3 rows)
> 
> zivah=# EXPLAIN ANALYZE SELECT count(*) from call_log_in_ram ;
>                                                             QUERY
> PLAN
> ----------------------------------------------------------------------------------------------------------------------------------
>  Aggregate  (cost=90760.80..90760.80 rows=1 width=0) (actual time=
> 6259.436..6259.437 rows=1 loops=1)
>    ->  Seq Scan on call_log_in_ram  (cost=0.00..89121.24 rows=3279119
> width=0) (actual time=0.013..4448.549 rows=3279119 loops=1)
>  Total runtime: 6259.543 ms

6 seconds doesn't sound like an unreasonable amount of time to count 3
million rows.  I don't see any performance issue here.

What were your expectations?

-- 
Bill Moran
Collaborative Fusion Inc.
http://people.collaborativefusion.com/~wmoran/

wmoran(at)collaborativefusion(dot)com
Phone: 412-422-3463x4023

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