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Questions tagged [blob]

A BLOB is a collection of binary data stored as a single entity in a database management system.

blob
3 votes
5 answers
1k views

Detecting File Compression

I have to read some data stored by a third party application in an Acess 2000 database. The vendor is no longer around to ask questions. One table contains image data that appears to be compressed - ...
user avatar
0 votes
2 answers
836 views

storing multiple values as binary in one field

I have a project where I need to store a large number of values. The data is a dataset holding 1024 2Byte Unsigned integer values. Now I store one value at one row together with a timestamp and a unik ...
user avatar
0 votes
2 answers
2k views

Inserting raw (binary?) image data into mysql? (PHP)

I've got a raw/(binary?) image like this: ÿØÿà�JFIF��–�–�*!!!$'$ &(goes on forever); when i try to insert this into mysql it doesn't work, the column type is set to longblob, any ideas?
Mickey's user avatar
  • 2,325
0 votes
1 answer
3k views

Crystal reports - PUSH blob data, image doesn't display

I've a crystal report that I'm trying to get a dynamic image displayed. This is the CRBasic 2008 version that comes with VS 2008, so i can't use the method where we link out to the file, it has to ...
Paddy's user avatar
  • 33.7k
-4 votes
1 answer
435 views

Is it possible to serialize and deserialize a void pointer to & from a blob in a database?

I would like to store a void pointer in a blob for a record in a table. Is this possible, and if so, how do I do it? I'm using VC++.
ckv's user avatar
  • 10.7k
0 votes
2 answers
730 views

Reading a Java BLOB object stored a database using .NET

I have an xml file which is stored in an "image" column in an MSSQL database. This field is being set by a java program i do not have access to. I have been told its just a standard Java "blob" ...
nferr's user avatar
  • 83
0 votes
3 answers
2k views

Using a handler to render an image from a blob on an ASP.NET page. I can't get it

I'm working on a simple image tagging and searching app. I've got my images uploading to the DB, the tags being applied, but am failing when I pull them back - the images don't render. I found this ...
aape's user avatar
  • 507
27 votes
12 answers
64k views

Saving images: files or blobs?

When you save your images (supose you have lots of them) do you store then as blobs in your Database, or as files? Why? Duplicate of: Storing Images in DB - Yea or Nay?
kurast's user avatar
  • 1,601
2 votes
1 answer
6k views

Problem with updating blob, if blob contains specific data

I have binary data that needs to be stored in a BLOB field in a SQL-database. In case of an UPDATE (storing into the database), the binary data comes as a string (BDS2006, no unicode). When the BLOB ...
Holgerwa's user avatar
  • 3,450
2 votes
3 answers
9k views

BLOB data to simple string in DataGridView?

I am using C# & MYSQL to develop a desktop application. In one of my form I have a DataGridView (dgvBookings) and in my database table I have a table tblBookings which contains a field ...
djmzfKnm's user avatar
  • 27.1k
17 votes
6 answers
21k views

Git - get all commits and blobs they created

Is there a git command that can output for every commit: id subject blobs it created with they path and size (like git ls-tree -l -r <commit> but only for created blobs)
tig's user avatar
  • 27.4k
7 votes
3 answers
13k views

Load blob image data into QPixmap

I am writing a program using PyQt4 for front-end GUI and this program accesses a back-end database (which can be either MySQL or SQLite). I need to store some image data in the database and below is ...
Bing Jian's user avatar
  • 1,034
16 votes
2 answers
28k views

How to insert / retrieve a file stored as a BLOB in a MySQL db using python

I want to write a python script that populates a database with some information. One of the columns in my table is a BLOB that I would like to save a file to for each entry. How can I read the file (...
RyanY's user avatar
  • 829
6 votes
1 answer
8k views

Copy blob data from one table to another on MySQL

I need to copy a set of data from one table to another that includes a BLOB column. I'm using an INSERT query with a subquery SELECT: INSERT INTO dest_table(field1, field2, field3, blobfield, field4) ...
Lailson Bandeira's user avatar
2 votes
2 answers
4k views

Error creating spatial index on MySql BLOB column

I am trying to add a spatial index to a table column named Location of type BLOB. If I try this: ALTER TABLE route ADD SPATIAL INDEX(Location); I get: Error: BLOB/TEXT column 'Location' used ...
James Allen's user avatar
  • 6,911

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