Re: Large 30 GB Database

2004-07-29 Thread Egor Egorov
Robert Harrison <[EMAIL PROTECTED]> wrote:

> I have been asked to provide a searchable electoral roll.
> 
> This data comprises of first name, surname, address for every person 
> over 18 in the UK. Approximately 30 GB
> 
> The data is to be used to find people in a certain area.
> 
> EG
> All John Smith in London.
> All Sarah Dean in St Johns Road, Manchester.
> 
> Should I even attempt this using mysql?
> Has anyone played with this much data in mysql?

30GB is not an issue for MySQL. It's not that big. Of course if you
do table scans (queries on non-indexed columns) they will be as fast
as the disks are (read - slow). But indexed 30GB is absolutely ok 
for MySQL. 

You may also consider to bear in mind the SOUNDEX function of MySQL: 
http://dev.mysql.com/doc/mysql/en/String_functions.html





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Re: Large 30 GB Database

2004-07-28 Thread Rich Allen
i have one MySQL dB that is currently about 26Gb, properly indexed 
searches are very quick

- hcir
On Jul 28, 2004, at 4:23 AM, matt ryan wrote:
>Should I even attempt this using mysql?
>Has anyone played with this much data in mysql?
I've got two 100 gig databases in mysql, and slave replication on both 
of them, the only time I have a problem is table scans, that much data 
will be slow.


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Re: Large 30 GB Database

2004-07-28 Thread matt ryan
>Should I even attempt this using mysql?
>Has anyone played with this much data in mysql?
I've got two 100 gig databases in mysql, and slave replication on both 
of them, the only time I have a problem is table scans, that much data 
will be slow.

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Large 30 GB Database

2004-07-28 Thread Robert Harrison
Hi All,
I have been asked to provide a searchable electoral roll.
This data comprises of first name, surname, address for every person 
over 18 in the UK. Approximately 30 GB

The data is to be used to find people in a certain area.
EG
All John Smith in London.
All Sarah Dean in St Johns Road, Manchester.
Should I even attempt this using mysql?
Has anyone played with this much data in mysql?
Thanks
Robert
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IT Manager
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+44 113 2330110
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