Re: Correct way to start new .MYD & .MYI files

2009-09-25 Thread Eugene Mah

TRUNCATE?

http://dev.mysql.com/doc/refman/5.0/en/truncate.html

DELETE?

http://dev.mysql.com/doc/refman/5.0/en/delete.html

eugene

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On 09/25/2009 04:04 PM, Michael Dykman wrote:

Alas, none that I am aware of, but if you can successfully run 'SHOW
CREATE TABLE `ApplicationLog`' before you drop the table, it will give
you the DDL you need to recreate that table *exactly*.

  - michael

On Fri, Sep 25, 2009 at 3:47 PM, Jones, Keven  wrote:

I don't want to lose the table structure just wish to get rid of the old data 
in the .MYD and .MYI files.

If I drop the table I will need to recreate the table with the existing 
structure.

So is there a way to just clear out the ApplicationLog.MYD and 
ApplicationLog.MYI files?

Thx again

-Original Message-
From: Michael Dykman [mailto:mdyk...@gmail.com]
Sent: Friday, September 25, 2009 3:42 PM
To: Jones, Keven
Subject: Re: Correct way to start new .MYD&  .MYI files

If you are prepared to accept that any data associated with those tables is 
*LOST*, it's pretty simple.

First try, the nice way.

USE;
DROP TABLE ApplicationLog;

If this fails, complains about curruption, whatever, go to the next step safely:

shutdown mysql (os-specific), then go ahead and delete those files.
Startup will happen normally and those tables will be gone.

Caution: you *might* be running an application that is expecting to use those 
tables...  now that they are gone, that application might begin to fail.  Be 
prepared to create a new empty table with that name
having the same structure,...   if you really don't want the data but
are only doing it to make your app happy, consider the black-hole database 
engine.

  - michael dykman



On Fri, Sep 25, 2009 at 3:33 PM, Jones, Keven  wrote:

Hello,

I am new to MySQL.I have a disk space issue and I have found that 3 files are 
the cause.

The files are ApplicationLog.MYD and ApplicationLog.MYI


I would like to purge these files and basically get rid of the data
that is in them. What is the proper Way to accomplish this? Does
anyone have a procedure to follow that will allow me to archive these files and 
Then start new ones so I can get my disk space back?

Thanks in advance.
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Re: about the username and hostname

2007-06-28 Thread Eugene Mah
Check the properties of your shortcut to see what
user name is specified in the command options

Eugene


Weiqi Wang wrote:
> Dear everyone:
>
> I start mySQL by a shotcut in windowsXP so that I don't have to input my 
> username, just password is required. That brings in a problem: I don't know 
> my user name(I suppose it to be "root") and the server host, etc. Is there 
> anyway I can find it out? (I suppose the server host is the localhost but I'm 
> not sure)
>
> Thanks very much for any help!
>   

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Re: [inbox] Re: Breaking Up Tables

2007-03-01 Thread Eugene Mah

[EMAIL PROTECTED] wrote:

-Original Message-
From: [EMAIL PROTECTED]
To: mysql@lists.mysql.com
Sent: Thu, 1 Mar 2007 10:00 AM
Subject: Re: Breaking Up Tables

It's nothing to do with mysqldump - it's part of the SELECT syntax for regular 
queries.

Then I'm confused as to what you're suggesting I do. I need to create mysqldump 
files of *parts* of a table in a database, because the entire table is just too 
big to move under the current circumstances. So, the end result should be a 
bunch of little mysqldump files that are each a part of this table in this 
database. Then I need to be able to rebuild the table by inserting the parts. 
Can you suggest a way to do that?
TIA,
Tony


if you have shell access on the server, why not just use
split?  Create your big dump file, split it into smaller
chunks and use cat on the other end to reassemble the pieces.
if you don't, just have someone at your host provider who does
do it.

Eugene

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Re: MySQL to Excel ?

2002-05-01 Thread Eugene Mah

At 08:01 01-05-02 -0500, Jay Blanchard wrote:
>Howdy,
>
>I need to write some data out to Excel spreadsheets for some of our managers
>to muddle with for projections. The query works fine...

If you're into Perl, I believe there are at least a couple of modules
that will write out data into Excel files.

Otherwise I would go the ODBC route and make Excel
connect to the DB via macros or VBA.

Eugene

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Re: Difficulties between OS versions

2002-04-10 Thread Eugene Mah

At 07:55 10-04-02 -0500, Lee, Tom J wrote:
>When we tried
>to install the same software on a SUN Sparc 20 running Solaris 2.6 errors
>were encountered.  Something about a missing file 'librt.so.1'.  We thought
>the OS version was 2.7.  Not correct!  I downloaded the binary MySQL version
>3.22.32 from the archive area on the website and it installed.  However, the
>same 4 tables that are working under Solaris 2.8 are presenting errors under
>Solaris 2.6.  The error message states that there is no field information
>available for any of the 4 tables.  Am I doing something wrong.

If I'm not mistaken, binaries are only available for Solaris 2.7 and up.
If you want to run on Solaris 2.6, you'll need to compile from the
sources.  I've gone through several versions running on
a Sparc 20 under Solaris 2.6 without any issues or problems building.

Eugene


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MySQL unix vs WinXP case sensitivity

2002-04-03 Thread Eugene Mah

I seem to be having issues with the way MySQL names
the table files under Unix and WinXP.  I'm not sure if it's a
mysql issue or a windows issue.

Normally, when I create tables in MySQL, I like to capitalize the
first letter.  Under unix, it all works fine and dandy.  But under
WinXP, the table name gets converted to all lowercase,
which consequently messes up my php files when I try to
go back and forth between unix and windows.  I suppose I could
switch to all lower case, but old habits die hard and I sometimes
forget when I'm typing away some PHP code.

The MySQL I installed is from the download page at mysql.com.

anybody else run into this issue?
Eugene


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Re: 127.0.0.1 problem

2001-11-09 Thread Eugene Mah

I would check the grant tables to see if host 127.0.0.1
has permission to access the DB.  Even though they
are the same thing, I don't know if mysqld treats them
as the same thing.

Eugene

At 03:15 AM 11/09/2001 -0800, you wrote:
>Hello,
>
>Are there any obvious reasons why
>
>mysql -h localhost
>works and
>mysql -h 127.0.0.1
>does not.
>
>It says : ERROR 2003: Can't connect to MySQL server on '127.0.0.1'
>(110)
>
>
>/etc/hosts contain :
>127.0.0.1 localhost
>
>as a first line.
>
>


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database documentation

2001-09-25 Thread Eugene Mah

What tools do people use to document their databases?
Are there graphical tools that will generate relational diagrams
of a database (like in Access)?

One of the databases I've been developing is starting to grow as I add
additional tables to hold different pieces of data.  At the moment, my
documentation comes from adding comments and CREATE statements
to the result of an earlier mysqldump file.  Back when I only had 7 or 8 
tables,
this was fine, but now my database is starting to approach 25 tables,
so some of the relationships are starting to get a little hard to keep track
of.

Many thanks
Eugene

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Sending data from Excel to MySQL

2001-09-11 Thread Eugene Mah

I was wondering if someone could direct me to some resources where I could
teach myself how to export data from Excel to a MySQL database.

I have a number of spreadsheets I use for data collection, and have recently
set up a MySQL database to stash the data in.  I've managed to figure out
how to copy/paste blocks of data into an HTML form and have PHP stick
the data into the database.  I'm looking for a way I can do it from within 
Excel
now, since there are more blocks of data I need to store which are scattered
throughout the spreadsheet.  I'd like to automate the process a little more
and go beyond the copy/paste thing.

I've looked at MyODBC a little bit, but not enough to see how I can use it
for this task (one of the things on my to do list).

I expect I'll end up learning some VB for doing this.

Many Thanks
Eugene

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