--
> ---+
> | t1| CREATE TABLE `t1` (
> `a` int(11) NOT NULL AUTO_INCREMENT,
> `message` char(20) DEFA
CREMENT=9437185 DEFAULT CHARSET=latin1 MAX_ROWS=100 |
+---+---
---+
1 row in set (0.02 sec)
I just want to know
You can try changing the myisam_data_pointer_size setting, but the
max_rows/avg_row_length should have worked.
Unless it's your OS restricting the mysql user to a 4GB file size. You can use ulimit or getrlimit to determine OS limits for a
user. If a user hits a limit imposed by the OS, I
ovement. I used the following CREATE:
MAX_ROWS=10;
At first I thought I had spotted the obvious in the above - the MAX_ROWS I
used is smaller than the Max_data_length that resulted, presumably MySQL
being smarter than I am. So I changed the MAX_ROWS to use larger nu
MySQL.
>
> -Micah
>
> On 03/22/2007 01:02 PM, JP Hindin wrote:
> > Addendum;
> >
> > On Thu, 22 Mar 2007, JP Hindin wrote:
> >
> >> Zero improvement. I used the following CREATE:
> >>MAX_ROWS=10;
> >>
> >
> > At first I th
This table size is based on your filesystem limits. This is a limit of
the OS, not MySQL.
-Micah
On 03/22/2007 01:02 PM, JP Hindin wrote:
Addendum;
On Thu, 22 Mar 2007, JP Hindin wrote:
Zero improvement. I used the following CREATE:
MAX_ROWS=10;
At first I thought
I have, after further googling, discovered that the 4.2 billion figure
that MySQL uses as 'max_rows' is, indeed, max_rows and not a max database
size in bytes. In theory I have solved my problem, and wasted however many
peoples bandwidth by putting all these eMails to the MySQL list.
Addendum;
On Thu, 22 Mar 2007, JP Hindin wrote:
> Zero improvement. I used the following CREATE:
> MAX_ROWS=10;
At first I thought I had spotted the obvious in the above - the MAX_ROWS I
used is smaller than the Max_data_length that resulted, presumably MySQL
being smarter
LENGTH=224,
MAX_ROWS=10;
Which I believe should have incorporated the appropriate changes - but
clearly has not. I've just made a couple of simple tests and verified that
the 4GB limit isn't the OS' doing (14GB working tarball packing and
unpacking), so I'm beginni
You probably did not change the max_rows setting when you created the table. If you read the manual under AVG_ROW_LENGTH for create
table it says:
"When you create a MyISAM table, MySQL uses the product of the MAX_ROWS and AVG_ROW_LENGTH options to decide how big the resulting
table is. I
gt; support in the kernel).
> >
> > So, when I first received a 'Table is full' error I looked up the MySQL
> > documentation and found the section regarding to altering max_rows on a
> > table. Nice and simple. I ran the following on my DB:
> > mysql>
upport in the kernel).
So, when I first received a 'Table is full' error I looked up the MySQL
documentation and found the section regarding to altering max_rows on a
table. Nice and simple. I ran the following on my DB:
mysql> ALTER TABLE mytable max_rows=2000;
And s
obviously Deb
Sarge, running on a recent x86 machine (so it does include the large file
support in the kernel).
So, when I first received a 'Table is full' error I looked up the MySQL
documentation and found the section regarding to altering max_rows on a
table. Nice and simple
Hi
MySQL uses the product of the MAX_ROWS and AVG_ROW_LENGTH values for MyISAM
tables, to decide how big the resulting table should. If you don't specify
either option, the maximum size for a table is 65,536TB of data (4GB before
MySQL 5.0.6).
Ref: http://www.mysql.org/doc/refman/5
Hi.
I've created the following table, with default value for MAX_ROWS. As
the following shows, it has a max. size of 4G.
I'm wondering: Is the expected max number of rows in this table =
Max_data_length \ Avg_row_length?
If not, what might it be?
How do I calculate it?
mysql> show
> -Original Message-
> From: Michael Stassen [mailto:[EMAIL PROTECTED]
> Sent: Thursday, December 08, 2005 14:34
> To: Jeff
> Cc: mysql@lists.mysql.com
> Subject: Re: Alter MyISAM table to adjust max_rows and Avg_row_length
>
>
> Jeff wrote:
> > I'
Jeff wrote:
I've got a table that just hit the 4gig limit for MyISAM tables in a 4.x
ver db. I need to alter the table structure and set the max_rows and
Avg_row_length to override the default of 4 gig. Problem is I can't
find any reference in the mysql docs that indicates how t
I've got a table that just hit the 4gig limit for MyISAM tables in a 4.x
ver db. I need to alter the table structure and set the max_rows and
Avg_row_length to override the default of 4 gig. Problem is I can't
find any refernce in the mysql docs that indicates how to decide a
s
Hi there,
I create a large table with the following command
CREATE TABLE MyTable(
ID int unsigned not null,
Description longtext,
index(ID),
foreign key (ID) references MainTable (ID) on delete cascade
);
alter table MyTable max_rows = 200;
Then if I do
On 25 Feb 2004 at 8:35, Tucker, Gabriel wrote:
> What values of MAX_ROWS and AVG_ROW_LENGTH would I need so that I
> could limit this table to 3 [or n] number of records?
You can't. That's not what MAX_ROWS and AVG_ROW_LENGTH are for.
They're only there to allow MySQL to
Ok
I think I am a bit confused on how the MAX_ROWS works...
This is the result of SHOW TABLE STATUS \G:
Name: gabe_test
Type: MyISAM
Row_format: Fixed
Rows: 33
Avg_row_length: 5
Data_length: 165
Max_data_length: 327679
Index_length: 1024
On 24 Feb 2004 at 22:01, Alison W wrote:
> Yes: MAX_ROWS is a *guidance* to the system in setting up the table
> and not a *limit* in any way.
Well, it is a limit in one way. MySQL uses it (in MyISAM tables) to
calculate the size of the pointer used for positions within the data
file.
> I wanted to test how the max_rows parameter works. I set it to 3 on a
> table. And, I was able to add 33 records [I stopped at this point]. It
> never prevented me from adding more records. The result is NOT what I
> expected. I expected that upon attempting to add the 4th rec
Hello
OS: Unix MySQL:4.0.16
OS: Linux MySQL:4.0.17
I am trying to limit the size of the MyISAM tables in a MySQL database. As far as I
can tell, my only option is using the MAX_ROWS parameter on a table. I am not looking
to do this limit at the OS level.
I wanted to test how the max_rows
On Tue, Dec 23, 2003 at 07:07:57PM -0600, Matt W wrote:
> Hi Jeremy,
>
> - Original Message -
> From: "Jeremy Zawodny"
> Sent: Monday, December 22, 2003 2:20 PM
> Subject: Re: Benefits of MAX_ROWS and AVG_ROW_LENGTH
>
>
> > On Fri, Dec 19
ng on very well. :-)
More below...
- Original Message -
From: "Mark Hawkes"
Sent: Saturday, December 20, 2003 3:50 PM
Subject: Re: Benefits of MAX_ROWS and AVG_ROW_LENGTH
> Hi Matt,
>
> Thanks very much for your thoughts and advice. I was going to ignore
using
>
Hi Jeremy,
- Original Message -
From: "Jeremy Zawodny"
Sent: Monday, December 22, 2003 2:20 PM
Subject: Re: Benefits of MAX_ROWS and AVG_ROW_LENGTH
> On Fri, Dec 19, 2003 at 06:40:17PM -0600, Matt W wrote:
> > Hi Mark,
> >
> > I'll tell you what I kno
On Fri, Dec 19, 2003 at 06:40:17PM -0600, Matt W wrote:
> Hi Mark,
>
> I'll tell you what I know. :-)
>
> First, AVG_ROW_LENGTH is only needed for dynamic row-length tables (it's
> ignored with fixed-length rows) -- more specifically, those with
> TEXT/BLOB columns.
And VARCHAR/VARBINARY.
Jerem
Hi Mark,
I'll tell you what I know. :-)
First, AVG_ROW_LENGTH is only needed for dynamic row-length tables (it's
ignored with fixed-length rows) -- more specifically, those with
TEXT/BLOB columns. Otherwise, if MAX_ROWS is used, MySQL will assume
that each TEXT/BLOB column will
Hi all,
At table creation time I can use MAX_ROWS and AVG_ROW_LENGTH to
(a) limit the size of a HEAP table
(b) overcome MyISAM's default 4GB limit
But are they used in any other ways? Does MySQL use them to improve
performance by sizing buffers appropriately or to prevent fragmentati
On Tue, 2002-06-18 at 11:43, Aborla.net - webmaster wrote:
> Hello,
>
> I created a table using:
> "CREATE TABLE a (pa VARCHAR (255) NOT NULL, pi VARCHAR (255), PRIMARY KEY
> (pa)) TYPE=HEAP MAX_ROWS=10"
>
> Then I inserted 16 recors. Later I done SELECT *
Hello,
I created a table using:
"CREATE TABLE a (pa VARCHAR (255) NOT NULL, pi VARCHAR (255), PRIMARY KEY
(pa)) TYPE=HEAP MAX_ROWS=10"
Then I inserted 16 recors. Later I done SELECT * FFROM a and mysql returned
16 records. Why this??? Does i should return only the last 10 records
Hi,
I am using MySql 3.23.47 for nt (W2000).
The number of rows of my table on an NTFS file system is estimated to become
around 6,000,000,000. I am trying to increase my default MAX_ROWS=4294967295
with ALTER TABLE test AVG_ROW_LENGTH=9 MAX_ROWS=60;
Following this, SHOW TABLE STATUS
Hi,
I am using MySql 3.23.47 for nt (W2000).
The number of rows of my table on an NTFS file system is estimated to become
around 6,000,000,000. I am trying to increase my default MAX_ROWS=4294967295
with ALTER TABLE test AVG_ROW_LENGTH=9 MAX_ROWS=60;
Following this, SHOW TABLE STATUS
If I may, I'd like to have a brief explanation of how to use max_rows and
avg_row_length.
Of course I have seen them in the manual, but after trying them I just
haven't found the explanations very clear.
Thank you.
--
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