Myblob

Exchange blobs (binary large objects) with MySQL databases

Description

MYBLOB_DEMO - Demonstrate the use of the MYBLOB tool kit
MYBLOB_OPEN - Open the connection to a MySQL database
MYBLOB_COMMAND - Send an SQL statement to a MySQL database
MYBLOB_FROM_DB - Retrieve a blob (binary large object) from a MySQL database
MYBLOB_TO_DB - Send a blob (binary large object) to a MySQL database
MYBLOB_CLOSE - Close the connection to the MySQL database

* Install MyODBC from www.mysql.com
* Insert your own MySQL database parameters in myblob_demo.m
* Run myblob_demo

Acknowledgements

The author wishes to acknowledge the following in the creation of this submission:
MySQL Database Connector
This submission has inspired the following:
myblob_testdb, Access a MySQL database, adodb_tools

• MATLAB release: MATLAB 7.1.0 (R14SP3)
• Other requirements: MySQL Connector/ODBC (aka MyODBC) from http://www.mysql.com/products/connector/odbc/

[Michael Ewens]

Works well, even if you don't need blob capability.

[none none]

nice, just what I was looking for.

[Brian McFee]

Beware, this only seems to work on windows.

[Lucy Matlab]

using Matlab 2008a and MySql 5.0 for Win32:

??? Invoke Error, Dispatch Exception:
Source: Microsoft OLE DB Provider for ODBC Drivers
Description: [Microsoft][ODBC Driver Manager] Data source name not found and no default driver specified

Error in ==> myblob_open at 40
ado_connection.Open;

Error in ==> myblob_demo at 26
connection = myblob_open (user, password, server, database);

[Joerg Buchholz]

@Lucy: Matlab 2008b seems to work with the MySQL ODBC 3.51 Driver and the MySQL ODBC 5.1 Driver. If you want to use the MySQL ODBC 5.1 Driver you have to change line 22 in myblob_open.m from
    'driver=MySQL ODBC 3.51 Driver; ' ...
to
    'driver=MySQL ODBC 5.1 Driver; ' ...

[M Koelemay]

Additionally, to allow this to work from 64-bit Matlab, install the 64-bit version of MSDASQL via a Microsoft hot fix (link below) and add "provider=MSDASQL" to the connection string

Source:
http://forums.mysql.com/read.php?37,280613,281101#msg-281101

Hot fix:
http://www.microsoft.com/downloads/details.aspx?FamilyID=000364db-5e8b-44a8-b9be-ca44d18b059b&displaylang=en

[Joseph Burgel]

Nice. I was wondering if anybody has tried to write to a BLOB not from a file but directly from a Matlab matrix variable? Say, a 5x5 double matrix? Skip writing to a .mat and reading back out of the file to save time?

[Pavel M.]

Hi,
what is command_text should be in myblob_to_db (ado_connection, table, column, where, file) function ?

[Pavel M.]

Selection and insertion from/to database work great with the uploaded functions! Thank you