I want to know where does MyISAM and innodb stores its BLOB data ; inside
the table or outside the table. I tried to understand BLOB using MySQL
online docs but failed.
Geetanjali Mehra
Oracle and MySQL DBA Corporate Trainer
Am 26.05.2014 11:40, schrieb geetanjali mehra:
I want to know where does MyISAM and innodb stores its BLOB data ; inside
the table or outside the table. I tried to understand BLOB using MySQL
online docs but failed.
inside the table, it's just a field type
signature.asc
Description
Is it possible to move blob data type values out of table and keep it in
separate page, keeping BLOB the part of the table.
Geetanjali Mehra
Oracle and MySQL DBA Corporate Trainer
On Mon, May 26, 2014 at 3:26 PM, Reindl Harald h.rei...@thelounge.netwrote:
Am 26.05.2014 11:40, schrieb
Hello,
I can see MyISAM stores BLOB column as same space as other data type
column,
but InnoDB doesn't. (If you mean same .ibd file it's true)
http://dev.mysql.com/doc/refman/5.6/en/innodb-row-format-overview.html
ROW_FORMAT= Compact holds first 768 bytes of BLOB column,
ROW_FORMAT= Dynamic
just don't store large binary data in tables
save the files somewhere in the application
and keep only references to the files in
the database
Am 26.05.2014 12:11, schrieb geetanjali mehra:
Is it possible to move blob data type values out of table and keep it in
separate page, keeping BLOB
- Original Message -
From: Reindl Harald h.rei...@thelounge.net
To: mysql@lists.mysql.com
Sent: Monday, 26 May, 2014 11:56:26 AM
Subject: Re: blob data types
Am 26.05.2014 11:40, schrieb geetanjali mehra:
I want to know where does MyISAM and innodb stores its BLOB data ; inside
;
-Original Message-
From: Adam Ilardi [mailto:mastaskill...@gmail.com]
Sent: Wednesday, March 13, 2013 9:16 AM
To: mysql
Subject: Blob implementation question
Hello All,
I'm trying to grok the blob implementation. This scenario is contrived
to understand blobs please don't suggest I
WHERE id=123;
This probably will (if foo is not indexed):
SELECT myblob FROM mytable ORDER BY foo;
-Original Message-
From: Adam Ilardi [mailto:mastaskill...@gmail.com]
Sent: Wednesday, March 13, 2013 9:16 AM
To: mysql
Subject: Blob implementation question
Hello All,
I'm trying
Hi;
I have loaded an image from a form into MySQL using Python as a longblob. Here
is my table:
mysql describe pics;
+-++--+-+-++
| Field | Type | Null | Key | Default | Extra |
Am 09.03.2012 13:28, schrieb Jack Hatterly:
Even when I hard code in the correct values I get this error. However, when I
select * from pics, where there is only one longblob in the table, it prints
out a tremendous load of data which indicates to me that a binary file has
indeed been
Date: Fri, 9 Mar 2012 13:43:11 +0100
From: h.rei...@thelounge.net
To: mysql@lists.mysql.com
Subject: Re: A Blob That's a String??
where is the difference of binary and string after fetch it from DB?
the result IS a binary safe string!
However, when I change this line in my code:
content
the BLOB data in a
unicode string to the server, i.e:
INSERT INTO TableName (Rawfield) VALUES ('%s'); - whereas the %s string is a
unicode string
That string is encoded by escaping mysql characters according to
http://dev.mysql.com/doc/refman/5.0/en/string-syntax.html (0x00, 0x22, 0x27,
0x5C
I can't help but wonder, if you send a string, does that mean you're putting
text in a blob ? Blobs are binary, and thus don't get encoded in the sense
of UTF8 vs Unicode. For a string, you may want a TEXT type column.
On the other hand, if you're indeed trying to insert binary data
Hi,
MySQL (version 5.1.45 , windows based) AES_DECRYPT () function is not working
properly,
If I removed Order by clause from the following query it works Fine.
If I add order by it resulting blob[empty] value.
select
S.semyear as semester, S.part as part,
S.code as code, S.subject
am
missing.
I have been unable to get prepared statements to store a blob.
using this test code:-
function saveImage($event)
{
$stmt = getDB()-prepare(INSERT INTO images (image) VALUES (?));
$null = NULL;
$stmt-bind_param(b, $null);
$fp = fopen(common-images
I think that probably the mistake is in the way you are inserting the
blob.
If i understand right, you are inserting the blob with a traditional
insert statement ??, in my experience i always use prepared statements
to insert blobs, in that way the text goes exactly as the source without
any
:48 PM
To: mysql@lists.mysql.com
Subject: BLOB data gets encoded as utf8!
Hello everyone!
I am using an MFC unicode project that uses ODBC to access a MySQL
5.1.50 database via the MySQL ODBC 5.1.6 driver.
character_set_connection is set to utf8 (Which I believe is the default
Subject: BLOB data gets encoded as utf8!
Hello everyone!
I am using an MFC unicode project that uses ODBC to access a MySQL
5.1.50 database via the MySQL ODBC 5.1.6 driver.
character_set_connection is set to utf8 (Which I believe is the default
for the driver) One of the tables contains two LONGBLOB
Hello everyone!
I am using an MFC unicode project that uses ODBC to access a MySQL
5.1.50 database via the MySQL ODBC 5.1.6 driver.
One of the tables contains two LONGBLOB columns, and the table default
charset is utf-8 (since the application is unicode).
However, when inserting into the
for BLOB fields, and
according to the MySQL docs columns of any BLOB type use no character
set.
Here is the problem: I found that, for example, 0xFF gets modified to
0xC3BF, which is in fact the UTF8 encoding for ASCII/Binary 0xFF.
Needless to say the data becomes useless. I did, however, determine
On 7/26/2010 2:30 AM, Manasi Save wrote:
Hi All,
I need to insert Blob data in my table using prepared statements. But
Whenever I try to insert it using prepared statement it is giving me
mysql syntax error.
Here's the prepared statement :-
SET @stmt = Concat(Insert into ',mydb,'.MyTable
Hi All,
I need to insert Blob data in my table using prepared statements. But Whenever I
try to insert it using prepared statement it is giving me mysql syntax error.
Here's the prepared statement :-
SET @stmt = Concat(Insert into ',mydb,'.MyTable(MyData, MyID)
Select
','"',Inpu
On 3/4/10 7:21 PM, peng yao xwei...@gmail.com wrote:
hello erveryone, I have a question about mysqldump.I have some blob data,
someone tell me mysqldump the data must use hex-blob options, why?
mysqldump just creates a file containing insert statements that when
executed rebuild your tables
hello erveryone, I have a question about mysqldump.I have some blob data,
someone tell me mysqldump the data must use hex-blob options, why?
Hi,
Beta version 5.011 of the BLOB streaming daemon for MySQL has been released.
The BLOB Streaming Daemon is a MySQL engine that runs as a daemon enabling
the storage and streaming of BLOB data directly in and out of a MySQL
database.
You can download the source code from http
Hi,
As stated http://dev.mysql.com/tech-resources/articles/vb-blob-handling.html
I have stored image using the following.
CREATE TABLE files(
file_id SMALLINT UNSIGNED AUTO_INCREMENT NOT NULL PRIMARY KEY,
file_name VARCHAR(64) NOT NULL,
file_size MEDIUMINT UNSIGNED NOT NULL,
file MEDIUMBLOB
You also need to NOT YELL AT PEOPLE, and GO LOOK AT THE CRYSTAL REPORTS
MANUALS.
On Wed, Feb 10, 2010 at 11:58 AM, Vikram A vikkiatb...@yahoo.in wrote:
Hi,
As stated
http://dev.mysql.com/tech-resources/articles/vb-blob-handling.html
I have stored image using the following.
CREATE TABLE
the helping time of the experts.
Sorry for wasting such experts time by posting simple queries.
Thank you
VIKRAM A
From: Johan De Meersman vegiv...@tuxera.be
To: Vikram A vikkiatb...@yahoo.in
Sent: Wed, 10 February, 2010 7:22:18 PM
Subject: Re: BLOB Filed - Image
Hi,
Alpha version 5.09 of the BLOB streaming engine for MySQL has been released.
The BLOB Streaming Engine is a MySQL storage engine which enables the
storage and streaming of BLOB data directly in and out of a MySQL database.
You can download the source code from http://www.blobstreaming.org
hi,all!
ENV: mysql server 5.1, myodbc 5.1.5, vc 6.0, I use ado to operate
mysql. I found it can't work to insert a blob data to mysql server. And it is
no problem to get the blob data from mysql server. what's the matter?
I used the source code of MSDN about AppendChunk
hi,all!
ENV: mysql server 5.1, myodbc 5.1.5, vc 6.0, I use ado to operate
mysql. I found it can't work to insert a blob data to mysql server. And it is
no problem to get the blob data from mysql server. what's the matter?
I used the source code of MSDN about AppendChunk
Hi,
Alpha version 5.08 of the BLOB streaming engine for MySQL has been released.
The BLOB Streaming Engine is a MySQL storage engine which enables the
storage and streaming of BLOB data directly in and out of a MySQL database.
You can download the source code from http://www.blobstreaming.org
in the bug system.
As it descibed, there is chance which I get corrupted data when read BLOB.
Now I wonder why I also get corrupted data when write BLOB into table...
I tried this:
step 1: read BLOB data from TABLE1
step 2: log the BLOB data
step 3: write the data into TABLE2
result
hi,
I found this: http://bugs.mysql.com/bug.php?id=34300 in the bug system.
As it descibed, there is chance which I get corrupted data when read BLOB.
Now I wonder why I also get corrupted data when write BLOB into table...
I tried this:
step 1: read BLOB data from TABLE1
step 2
, and TABLE2 has new structure.
Before I really do the copy task, I created some triggers to
synchronize the insert update.
When I finally complete the task, I find ALL blob column appear to
result in inconsistent status with the orignal table.
There are users which do query and update on TABLE1.
So
mydatabase.latin1.sql
$ sed -e 's/latin1/utf8/g' mydatabase.latin1.sql mydatabase.utf8.sql
$ iconv -f latin1 -t utf8 mydatabase.utf8.sql mydatabase.utf8.sql
$ echo SET NAMES utf8; tmp.sql
$ cat mydatabase.utf8.sql tmp.sql
$ mv tmp.sql mydatabase.utf8.sql
I've one question :
* if my database have some blob
I've break line misteak in my previous message, this is the fix :
$ mysqldump --user=root --password=password --host=mybox mydatabase --
default-character-set=latin1 mydatabase.latin1.sql$ mysqldump --
user=root --password=password --host=mybox mydatabase
--default-character- set=latin1
mydatabase.utf8.sql
I've one question :
* if my database have some blob field with binary data (like image...),
iconv convert also this data then this data will be corrupted ?
I've the answer !
My previous script corrupt binary data.
To fix this issue I need to dump data with --hex-dump
utf8; tmp.sql
$ cat mydatabase.utf8.sql tmp.sql
$ mv tmp.sql mydatabase.utf8.sql
I've one question :
* if my database have some blob field with binary data (like image...),
iconv convert also this data then this data will be corrupted ?
I've the answer !
My previous script corrupt
Hi,
Alpha version 5.06 of the BLOB streaming engine for MySQL has been released.
The BLOB Streaming Engine is a MySQL storage engine which enables the
storage and streaming of BLOB data directly in and out of a MySQL database.
You can download the source code from http://www.blobstreaming.org
Hi,
Alpha version 5.05 of the BLOB streaming engine for MySQL has been released.
You can download the source code from http://www.blobstreaming.org/download.
Documentation has also been updated .
The BLOB Streaming Engine is a MySQL storage engine which enables the
storage and streaming
Hi,
I have a problem with the migration of a table that has a column with BLOB data.
The source server is MySQL version: 4.0.16 and the destination server is MySQL
version: 5.0.45
I tried with mysqldump and SELECT INTO but when import the data on the destination server, the
BLOB data
: [EMAIL PROTECTED], Lotus Notes: Mike Spreitzer/Watson/IBM
Office phone: +1-914-784-6424 (IBM T/L 863-)
AOL Instant Messaging: M1k3Sprtzr
Mike Spreitzer/Watson/[EMAIL PROTECTED]
02/19/08 08:34 PM
To
Baron Schwartz [EMAIL PROTECTED]
cc
mysql@lists.mysql.com
Subject
Re: How bad is adding BLOB
To
Baron Schwartz [EMAIL PROTECTED]
cc
mysql@lists.mysql.com
Subject
Re: How bad is adding BLOB column and index at the same time?
Thanks, Baron. Yes, the table is bigger than memory. It took about 2.5
days to create the table, inserting about 7,000 rows at a time
I am new to MySQL, and wonder if I have done something terribly stupid. I
have an InnoDB table with 27 million rows. Without thinking very much, I
issued the following command through the GUI administration tool:
ALTER TABLE `wyky`.`externallinks` ADD COLUMN `el_p2` BLOB NOT NULL AFTER
TABLE `wyky`.`externallinks` ADD COLUMN `el_p2` BLOB NOT NULL AFTER
`el_index`,
ADD INDEX `el_p2`(`el_p2`(150))
Of course, all the values in this column will be the same. The index
will, if this ever completes, indicate that one value is associated with
all 27E6 rows. My primary question
is adding BLOB column and index at the same time?
Hi,
On Feb 19, 2008 5:20 PM, Mike Spreitzer [EMAIL PROTECTED] wrote:
I am new to MySQL, and wonder if I have done something terribly stupid.
I
have an InnoDB table with 27 million rows. Without thinking very much,
I
issued the following
I've been experimenting with storing image data in blob fields, and I was
surprised that using the mysql client to select the field with a
semi-colon query terminator resulted in the binary data being dumped to
the terminal (with lots of beeping) while using the \G query terminator
resulted
Oct 2007, at 04:35, Paul McCullagh wrote:
For this release I have completed changes to the MySQL Connector/J
5.0.7, to allow BLOB data to be transparently stored and retrieved
from the MyBS BLOB repository. The new version of the driver is
called MySQL Connector/J SE (streaming enabled
Hi All,
I have just released PBXT 0.9.90 and MyBS version 0.5.03. PBXT is a
transactional storage engine for MySQL (http://www.primebase.com/xt),
and MyBS is a storage engine that enables streaming of BLOB data
directly in and out of a MySQL database (http://www.blobstreaming.org
On 19 Oct 2007, at 04:35, Paul McCullagh wrote:
For this release I have completed changes to the MySQL Connector/J
5.0.7, to allow BLOB data to be transparently stored and retrieved
from the MyBS BLOB repository. The new version of the driver is
called MySQL Connector/J SE (streaming
Hello all,
I'm running MySQL 4.0.24 on Debian Linux and have a problem with a very
large blob insert query - it always fails with #2020: Got packet bigger
than 'max_allowed_packet'. I searched the docs and found some
references that this value can not be greater than 1 GB with MySQL 4.x -
indeed
Hi All,
I have just released version 0.5 of the BLOB streaming engine for MySQL.
This version includes all the basic functionality required to stream
BLOB data in and out of MySQL tables.
The main features are:
- Uploading of BLOB data directly into the database using HTTP PUT or
GET
Message-
From: Paul McCullagh [mailto:[EMAIL PROTECTED]
Sent: Wednesday, June 27, 2007 2:57 AM
To: Ann W. Harrison
Cc: MySQL List; MySQL Internal
Subject: Re: Blob data
Hi Ann,
Currently, the thoughts on how to make the BLOB references secure go
like this:
The BLOB reference consists
over network and reexecuted on slaves.
The design of blobs that Jim did at DEC included the ability to send
them across the network in chunks of a client specified size. In 1982
it was quite common to have blobs that were larger than physical memory.
What he did more recently was add a blob
Rick is dead on correct, I call I chunking blob data.. There is an
article here on a simple implementation:
http://www.dreamwerx.net/phpforum/?id=1
I've had hundreds of thousands of files in this type of storage before
with no issues.
On Tue, 3 Jul 2007, Rick James wrote:
I gave up
implementation did File - Database -- the huge blob was never
instantiated completely in RAM, only one chunk at a time. (Imagine trying
to store a 50GB file.)
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Sent: Tuesday, July 03, 2007 2:08 PM
To: Rick James
Cc: 'Paul
faster than 1 1M chunk.
My implementation did File - Database -- the huge blob was never
instantiated completely in RAM, only one chunk at a time. (Imagine trying
to store a 50GB file.)
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Sent: Tuesday, July 03
Hi Ann,
Currently, the thoughts on how to make the BLOB references secure go
like this:
The BLOB reference consists of 2 components: The first component is
basically an index used to find the BLOB on the server. The second
component is a random number generated when the BLOB is created
This one time, at band camp, Warren Young [EMAIL PROTECTED] wrote:
Storing arbitrary data in a BLOB column is
tantamount to trying to turn the database into a file system. If you
want a file system, use a file system.
What is a file system, if not a database?
Kevin
--
MySQL General
:
Hello All,
I want a clarification. Whe run a forum wherein people send
messages with/without attachments. Attachments may contain images,
documents etc.. We are actually storing the attachment in a blob
column. Sometimes the attachments are big. And today the table
size has grown to 40 GB
Hi All,
I have just released the first version of the BLOB Streaming engine
for MySQL (MyBS). You can download the source code of the engine from
http://www.blobstreaming.org/download. Pluggable binaries for MySQL
5.1.19 (32-bit Linux and Mac OS X) are also available.
To install the plug
Hi Konstantin,
On Jun 26, 2007, at 1:37 PM, Konstantin Osipov wrote:
* Paul McCullagh [EMAIL PROTECTED] [07/06/26 15:35]:
I am about to release the first version of the BLOB Streaming engine.
We are not that far yet (obviously), but our aim is to create an open
platform which
Kevin Waterson wrote:
This one time, at band camp, Warren Young [EMAIL PROTECTED] wrote:
Storing arbitrary data in a BLOB column is
tantamount to trying to turn the database into a file system. If you
want a file system, use a file system.
What is a file system, if not a database
Ratheesh,
If you still want to place you blob data in the database, seperate out the
blob storage to a seperate table. This will help you alleviate few of your
performance and maintenance problems.
~Alex
On 6/22/07, Steve Edberg [EMAIL PROTECTED] wrote:
At 12:11 PM +0530 6/22/07, Ratheesh K
is small and roughly the same size as
all others of its kind. Storing arbitrary data in a BLOB column is
tantamount to trying to turn the database into a file system. If you
want a file system, use a file system.
Microsoft's been promising a database-backed file system for something
like 15 years
Hello All,
I want a clarification. Whe run a forum wherein people send messages
with/without attachments. Attachments may contain images, documents etc.. We
are actually storing the attachment in a blob column. Sometimes the attachments
are big. And today the table size has grown to 40 GB
At 12:11 PM +0530 6/22/07, Ratheesh K J wrote:
Hello All,
I want a clarification. Whe run a forum wherein people send messages
with/without attachments. Attachments may contain images, documents
etc.. We are actually storing the attachment in a blob column.
Sometimes the attachments are big
Hi,
SenTnel wrote:
Hi all!
I have a table that contains a column (blob, text type, formatted as
MEDIUMTEXT) with text hyphen (-) delimited, listing
rooms by numbers, and I need to export or insert that data into another
table, where all other info on the other columns remains the same
Hi all!
I have a table that contains a column (blob, text type, formatted as
MEDIUMTEXT) with text hyphen (-) delimited, listing
rooms by numbers, and I need to export or insert that data into another
table, where all other info on the other columns remains the same, but I
need the data
hello:
i have the following table in the database test_transaction
--
-- Table structure for table `test_blob`
--
CREATE TABLE `test_blob` (
`f1` blob NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
i saw the files in the mysql var directory
$ ls -l test_transaction/test_blob.frm
-rw-rw
Hi,
hello:
i have the following table in the database test_transaction
--
-- Table structure for table `test_blob`
--
CREATE TABLE `test_blob` (
`f1` blob NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=latin1;
i saw the files in the mysql var directory
$ ls -l test_transaction/test_blob.frm
-rw
in BLOB fields, rather than
LONGBLOBs you would have over 11,000 rows for a single 700MB iso.
I am not sure how MySQL handles blobs internally but I would assume it is
like most other databases and adds some sort of delimiter to the data and
has to seek to it to distinguish columns. This means a 700Mb
anyone who has had to deal with
large files knows is a definate issue.
According to your method of storing binary data in BLOB fields, rather than
LONGBLOBs you would have over 11,000 rows for a single 700MB iso.
I am not sure how MySQL handles blobs internally but I would assume it is
like
I don't feel the implementation direction this article takes is good. It
uses single row binary storage, which anyone who has had to deal with
large files knows is a definate issue.
On Sat, 21 Apr 2007, Kevin Waterson wrote:
This one time, at band camp, Michael Higgins [EMAIL PROTECTED]
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
I don't feel the implementation direction this article takes
is good. It uses single row binary storage, which anyone who
has had to deal with large files knows is a definate issue.
Just wanted to thank
-Original Message-
From: Dan Buettner [mailto:[EMAIL PROTECTED]
Sent: Friday, April 20, 2007 3:16 PM
To: Michael Higgins
Cc: mysql@lists.mysql.com
Subject: Re: advice for blob tables?
At any rate - based on my experience with the Sybase system I managed, I
would advise you
for the implementation of
BLOB streaming for MySQL.
In fact, the first announcement will go out on Monday, but you can
already checkout some of the details of our plans at a web-site we
have setup for the new project:
http://www.blobstreaming.org
I will also be holding a BoF at the MySQL Users
Hello, all --
I want to set up a database for document storage. I've never worked with
binary files stored in tables.
So before I just jump in and go like I usually do, does anyone have any
quick advice, things to consider, links, must-RTFMs or the like to help a
newbie out?
I feel like I need
Michael, here's what I can tell you -
Some people will advise you against storing documents in tables - claim it
makes the data harder to serve up, etc. I agree it's quite simple to set up
a folder structure with your files on the filesystem and point Apache or IIS
to it while tracking metadata
Here's a good php implementation, you can implement the concept in any
language you like:
http://www.dreamwerx.net/phpforum/?id=1
On Fri, 20 Apr 2007, Michael Higgins wrote:
Hello, all --
I want to set up a database for document storage. I've never worked with
binary files stored in
This one time, at band camp, Michael Higgins [EMAIL PROTECTED] wrote:
So before I just jump in and go like I usually do, does anyone have any
quick advice, things to consider, links, must-RTFMs or the like to help a
newbie out?
This tutorial deals with images and BLOBs. It should get you
Hi All,
I'm trying to figure out how to put a pdf file into a blob field.
I guess a pdf file is a binnary file and it will contain characters that will
mess things up, so my question is:
can it be done? Or better, how can it be done? ;)
Any pointers to documentation are a bonus!
Thanks all
Ed wrote:
Hi All,
I'm trying to figure out how to put a pdf file into a blob field.
I guess a pdf file is a binnary file and it will contain characters that will
mess things up, so my question is:
can it be done? Or better, how can it be done? ;)
Any pointers to documentation are a bonus
On Wednesday 07 March 2007 19:28, Jay Pipes wrote:
Ed wrote:
I guess a pdf file is a binnary file and it will contain characters that
will mess things up, so my question is:
Hi, sorry for the late answer. The reason, until I come up with a better one,
is that I'm doing my own basic
On Wednesday 07 March 2007 19:28, Jay Pipes wrote:
Is there a specific reason you want to store this in a database? Why
not use the local (or networked) file system and simply store the
metadata about the PDF in the database?
Cheers,
Jay
Hi Jay,
Could you explain what you mean by metadata
I would put the pdf as a regular file on the hd, and store the path to
it in the db.
Meta data could be things like the size of the pdf, author, owner,
number of pages etc.
Storing binary data from pdf:s or images or any other common binary
format is generally not a good idea.
Alec
Ed
i think he means you store only the name of the document
and the directory location of where it is located.
-Original Message-
From: Ed [EMAIL PROTECTED]
Sent: Mar 7, 2007 3:15 PM
To: mysql@lists.mysql.com
Subject: Re: binary into blob
On Wednesday 07 March 2007 19:28, Jay Pipes wrote
Ed wrote:
On Wednesday 07 March 2007 19:28, Jay Pipes wrote:
Is there a specific reason you want to store this in a database? Why
not use the local (or networked) file system and simply store the
metadata about the PDF in the database?
Cheers,
Jay
Hi Jay,
Could you explain what you
On Wednesday 07 March 2007 21:26, Alexander Lind wrote:
I would put the pdf as a regular file on the hd, and store the path to
it in the db.
Meta data could be things like the size of the pdf, author, owner,
number of pages etc.
Storing binary data from pdf:s or images or any other common
Here's a great article on how to store pdf/whatever binary as blob chunks:
http://www.dreamwerx.net/phpforum/?id=1
On Wed, 7 Mar 2007, Jay Pipes wrote:
Ed wrote:
Hi All,
I'm trying to figure out how to put a pdf file into a blob field.
I guess a pdf file is a binnary file
I have to disagree with most, I would store the entire file in the
database, metadata and all. Better security, if you have a backend
database, it's much harder to get the data than pdf's sitting in a
directory on the webserver. Plus if you ever want to scale to a
multi-webserver environment,
imagine a large system where pdf-files are accessed by clients a lot.
say 1 pdf file is access per second on average.
also say that your database is on a machine separate from the
webserver(s) (as is common).
do you really think its a good idea to pump the pdf data from the db
each time it
I've built systems than stream tons of data via this method, at times
into some impressive requests per second. Also I've exposed files stored
in this manner via a ftp interface with servers able to deliver near wire
speed data in and out of the db storage.
When your into a load balanced
On 07 Mar 2007 at 3:57p -0500, Alexander Lind wrote:
imagine a large system where pdf-files are accessed by clients a lot.
say 1 pdf file is access per second on average.
also say that your database is on a machine separate from the
webserver(s) (as is common).
do you really think its a good
Kevin Hunter wrote:
Grrr. All you lazy top-posters! ;) It seems to me that a case can
be legitimately made for both methods of handling BLOBs. On the one
hand, where speed and/or efficiency (on many different levels) are the
top priorities, it'd be good to keep the DB as trim as possible.
hehe, well said and sorry for the top-posting.
I can only agree, both methods have their merits! :)
Alec
Seems I started quite a debate ;)
I wanted to thank you all again for your opinion and for planting a new seed
of doubt on which direction I'll go ;)
I setup the db as proposed earlier
Dear MySql,
I am finding my version 5.1.6 and 4.1.9 sometimes locking up during the
passing of BLOB data. Size between 25 and 250 KB.
If I repeat the transaction it will pass.
Statistically it occurs about 1 in 30 INSERTs or UPDATEs or a blob.
Non-Blob data to the same table will never
For adjusting max allowed packet value, I need to know the maximum
size of my blob fields.
How can I get that?
Dominik
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value, I need to know the maximum
size of my blob fields.
How can I get that?
Dominik
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