3 messages in com.mysql.lists.win32group slow
FromSent OnAttachments
Jorge Bastos14 Apr 2006 02:47 
Joelle Tegwen14 Apr 2006 07:20 
jbon...@sola.com.au17 Apr 2006 16:20 
Subject:group slow
From:Jorge Bastos (mysq@decimal.pt)
Date:04/14/2006 02:47:30 AM
List:com.mysql.lists.win32

DecimalHi people,

Is there any procedure to make the group function faster? I mean, i have a tabel with 200.000 record and about 8 fields, a command like:

--- select username,count(*) from table group by username

---

will take about 4/5 secunds

a simple select count(*) from table

will take 0.00045 secunds ( more or less )

here's the table description:

+---------------+---------------+------+-----+---------------------+-------+ | Field | Type | Null | Key | Default | Extra | +---------------+---------------+------+-----+---------------------+-------+ | username | varchar(255) | | MUL | | | | filename | text | | | | | | file_bytes | bigint(15) | | | 0 | | | remote_host | varchar(255) | | | | | | remote_ip | varchar(255) | | | | | | command | varchar(255) | | | | | | transfer_time | decimal(12,5) | | | 0.00000 | | | date_time | datetime | | | 0000-00-00 00:00:00 | | | info | varchar(2) | | | | | +---------------+---------------+------+-----+---------------------+-------+

Jorge