In SQLServer database i have stored a blob using updateblob function,
type of the table column is image.
When i use Selectblob statement to get the blob into a blob variable, i am getting only 32 KB of data. But with ASA i am getting the complete data..
How to get Complete data in SQL Server?
regds.,
ranga
What is BLOB field in MS SQL? How to use insert and access from this field?
View 2 Replies View RelatedI need some help in SSIS Package I am trying to write a byte array to an image (blob) in DB2 destination. I am getting SQL code -290 Invalid Description, if i set the output column to a byte stream. If I set the output column to an Image data type then I get a different error the package will not at that time even process it errors out right away. At least using a byte stream datatype it errors out when it is about to write to the olebd destination. Anybody have success using BLOB fields in SSIS package data flow? Thanks for any help.
View 5 Replies View RelatedI am trying to read an Informix 9.3 blob field into a TSQL (SQL Server Stored Procedure) and the data type conversion is not supported thru the MS ODBC Driver installed with Win2000/SQL2000. Does anyone know of another method to retrieve this data, or of a vendor that provides an ODBC driver that supports the Informix blob data type. Thanks!
View 1 Replies View RelatedI'm using the code below to send files that are in a blob file in my database to the browser client. The code sends the file in chunks in order to increase performance. The file I'm using to test with is 7MB. It works great on Windows XP with any browser. It takes virtually the same amount of time compared to downloading the file directly from the webserver. However, Windows 2000 and Mac OS X both take about 4x the amount of time it takes to download the file on XP machines. Why the performance difference? Is there anything I can do to fix this? I tried downloading the file directly from the webserver instead of getting it out of the database and it takes the same amount of time on all 3 OS. I had the same problem on Windows XP when I wasn't sending the file in chunks, but after using the code below, it started working for XP only.
Dim bufferSize As Integer = 24000
Dim outbyte(bufferSize - 1) As Byte
Dim retval As Long
Dim startIndex As Long = 0
Dim sql As String = "SELECT ..."
Dim cmd As New SqlCommand(sql, conn)
conn.open()
Dim dr As SqlDataReader = cmd.ExecuteReader(CommandBehavior.SequentialAccess)
If dr.Read() Then
' Reset the starting byte for a new BLOB.
startIndex = 0
' Read bytes into outbyte() and retain the number of bytes returned.
retval = dr.GetBytes(DocCol, startIndex, outbyte, 0, bufferSize)
Current.Response.Clear()
Current.Response.Buffer = True
Current.Response.ContentType = "application/octet-stream"
Current.Response.AddHeader("Content-Disposition", "attachment; filename=" & myfile" & "." & myextension)
Do While retval = bufferSize
Current.Response.BinaryWrite(outbyte)
Current.Response.Flush()
' Reposition the start index to the end of the last buffer and fill the buffer.
startIndex += bufferSize
retval = dr.GetBytes(DocCol, startIndex, outbyte, 0, bufferSize)
Loop
'Write the remainder of the last chunk
Dim remaining(retval) As Byte
Array.Copy(outbyte, 0, remaining, 0, retval)
Current.Response.BinaryWrite(remaining)
Current.Response.Flush()
Current.Response.Close()
End If
dr.Close()
conn.Close()
We are debating what is industry “best practice� for serving huge numbers of images in an industrial scale website. More directly, which approach produces the best performance and the best scalability? For example, how do sites like ebay, Amazon, and other large sites handle the millions or billions of images they must deal with?
Store as BLOB in sql server?
Store in /images folder and store url text into sql server?
We always assumed that the second approach is what most sites must do. But do they?
One developer on our team maintains that storing one million or more image files in a directory will most certainly result in poor performance, because the server must scan the directory, searching for the correct file, each time a web request is made. The directory is not indexed (?) so performance must eventually suffer.
Other developer counters that storing millions of images as BLOBs into sql server will result in poor performance and HUGE database. An additional layer of access (webserver to sql server, back to webserver, then to client) causes a delay and performance hit.
Who is right? What do the gurus as the world class sites do?
I have a table in a SQL Server database that contains a field(data type image) that contains a text file. I'm trying to retrieve this file and save it onto the hard drive. I'm using the code below, but get I get the error 'Arguments are of the wrong type, are out of acceptable range, or are in conflict with one another.' at line 11. This code worked fine when I tested it on the pubs database and exporting the logo field out of pub_info. I'm not quite sure why this doesn't work for my database. Can anyone see where I'm going wrong?
1 Dim cn As ADODB.Connection2 Dim rs As ADODB.Recordset3 Dim mstream As ADODB.Stream
4 cn = New ADODB.Connection5 cn.Open("Provider=SQLOLEDB;data Source=server;Initial Catalog=database;User Id='userid';Password='password'")
6 rs = New ADODB.Recordset7 rs.Open("Select * from filesubmissions where bundleId = 'F0000014.bun'", cn, ADODB.CursorTypeEnum.adOpenKeyset, ADODB.LockTypeEnum.adLockOptimistic)
8 mstream = New ADODB.Stream9 mstream.Type = ADODB.StreamTypeEnum.adTypeBinary10 mstream.Open()11 mstream.Write(rs.Fields("BLOB").Value)12 mstream.SaveToFile("c:export.txt", ADODB.SaveOptionsEnum.adSaveCreateOverWrite)
13 rs.Close()14 cn.Close()
Thanks
Hello,
I could save the file in the sql server database. The problem i am having is, I am not able to read the document from the database. I do not want to use response.outputstream......
I have to read the file for specific contents. Anyhelp would be great.
- Suresh
1. How many blob data types can be defined in a table on SQL Server 7.0
2. What is the max size for a blob data type.
Hi all,
I have a replicated table with a column which is used to store sound files - it is of type varbinary(MAX).
What is the best way to store a file from the filesystem inside this column on the PDA side (i.e. inside SQL Server CE) without loading the whole file into the PDA's memory, i.e. using some sort of buffering?
On full SQL Server 2005 I make use of UPDATE.WRITE() to save buffers inside the column - is there an alternative to this on SQL Server CE? Can anyone provide sample code / point me to samples that deal with SQL Server CE & BLOBs.
Thanks for your help!
i'm working in microsoft sql server and i got following problem:
I have a text files Asia.txt in E: folder with some data in it as shown below
Asia.txt
1, Mizuho, Fukushima, Tokyo
2, Minika, Pang, Taipei
3, Jen, Ambelang, India
4, Jiang, Hong, Shangai
5, Ada, Koo, HongKong
And I have a table Region, in the database Companies, as shown below.
1>CREATE TABLE REGION (ID INT,REGION VARCHAR(25),DATA varbinary(MAX))
2>GO
I queried all the data from Asia.txt, using the OPENROWSET function.
1>INSERT INTO REGION (ID, REGION, DATA)
2>SELECT 1 AS ID, 'ASIA' AS REGION,
3> * FROM OPENROWSET( BULK 'E:Asia.txt',SINGLE_BLOB)
4>AS MYTABLE
5>GO
it occupied some memory then i deleted this record using follwoing query
1>DELETE REGION
2>GO
then it deletes the record successfully but memory is not getting freed
can anyone help me out on this problem
Hi,
I want to load a file into a blob column using a stored proc. The file will be on a UNC path on the network. Is there a system stored proc or any utility that can be fired off from the sp, using xp_cmdshell that will take a file path from the filesystem and load it into a blob column in a database table.
I have worked with blob fields in the past but in those instances I loaded the blobs into the database from front end ADO.net code. This time around I need to pull this off stricktly from a stored proc.
Any help will be appreciated.
thank you.
A little background on what I am trying to achieve first. We are moving to Azure virtual machines and we will have 8 disks on the SQL Server box. I am adding more files to the primary file group and each file will go on its own drive. I am then rebalancing data across these files by rebuilding all of the indexes on the tables which is working fine. No problems so far all is good.
I now have an additional problem. If there is a lob or blob column on the table, rebuilding the clustered index and all the non clustered indexes doesn't rebalance the blob or lob data across the disks such as it does with in row data.
I cannot find any articles on rebalancing lob or blob data because all the articles say to move to a new file group. I do not want a new file group, I just want to use the primary file group where the data already resides, and just redistribute it evenly in the same way that I can in row data which is working fine.
One solution I thought about was to BCP data out of the table, truncate the table and then BCP back into the table which I imagine would have the desired effect of distributing the data evenly over the files.
I'm using DTS to import data from an Access memo field into a SQL Server ntext field. DTS is only importing the first 255 characters of the memo field and truncating the rest.I'd appreciate any insights into what may be causing this problem, and what I can do about it.Thanks in advance for any help!
View 4 Replies View Related
I am trying to drag data from Informix to Sql Server. When I kick off the package
using an OLE DB Source and a SQL Server Destination, I get DT_DBDATE to DT_DBTIMESTAMP
errors on two fields from Informix which are date data ....no timestamp part
I tried a couple of things:
Created a view of the Informix table where I cast the date fields as datetime year to fraction(5), which failed.
Altered the view to convert the date fields to char(10) with the hopes that SQL Server would implicitly cast them
as datetime but it failed.
What options do I have that will work?
Hi ,Have a Visual C++ app that use odbc to access sql server database.Doing a select to get value of binary field and bind a char to thatfield as follows , field in database in binary(16)char lpResourceID[32+1];rc = SQLBindCol(hstmt, 1, SQL_C_CHAR,&lpResourceID,RESOURCE_ID_LEN_PLUS_NULL , &nLen1);and this works fine , however trying to move codebase to UNICODE antested the followingWCHAR lpResourceID[32+1];rc = SQLBindCol(hstmt, 1, SQL_W_CHAR,&lpResourceID,RESOURCE_ID_LEN_PLUS_NULL , &nLen1);but only returns 1/2 the data .Any ideas , thoughts this would work fine , nit sure why loosing dataAll ideas welcome.JOhn
View 2 Replies View RelatedHi,
I'm importing an Access database to SQL Server 2000.
The issue I ran into is pretty frustrating... All Memo fields that get copied over (as Text fields) appear to be fine and visible in SQL Server Enterprise Manager... except when I display them on the web via ASP - everything is blank (no content at all).
I didn't have that problem with Access, so I ruled out the possibility that there's something wrong with the original data.
Is this some sort of an encoding problem that arose during database import?
I would appreciate any pointers.
We have a stock code table with a description field and a brand field - when the data was entered, some of the records were entered with the brand field in the description field.
ie.
Code Description Brand
ABC1 BLANK DVD SONY
ABC2 SONY BLANK DVD SONY
what I need to do is identify where the Brand is in the Description field ...
I have tried ;
select * from Table
where Description Like Brand
not very successful.
Hi all,
i've a reasonable amount of experience with MS Access and less
experience with SQL Server. I've just written an .NET application that
uses an SQL Server database. I need to collate lots of data from around
the company in the simplest way, that can then be loaded into the SQL
Server database.
I decided to collect the info in Excel because that's what most people
know best and is the quickest to use. The idea being i could just copy
and paste the records directly into the SQL Server database table (in
the same format) using the SQL Server Management Studio, for
example.
Trouble is, i have a problem with line feed characters. If an Excel
cell contains a chunk of text with line breaks (Chr(10) or Chr(13))
then the copy'n'paste doesn't work - only the text up to the first line
break is pasted into the SQL Server database cell. The rest is not
pasted for some reason.
I've tried with MS Access too, copying and pasting the contents of a
memo field into SQL Server database, but with exactly the same problem.
I've tried with 'text' or 'varchar' SQL Server database field formats.
Since i've no experience of using different types of databases
interacting together, can someone suggest the simplest way of
transferring the data without getting this problem with the line feeds?
I don't want to spend hours writing scripts/programs when it's just
this linefeed problem that is preventing the whole lot just being
cut'n'pasted in 5 seconds!
cheers
Dominic
I have had an application running successfully in production for two years. In the last three months the app has become a document management system as well. During the addition of images, it was decided that no images would be stored in the database but on the file system. We now have over 500,000 images averaging in size of 92k each. I had to upgraid the raid once and I can only assume that I will again. I am not expecting the image count to exceed 700,000 in the next 6 months; By this time next year, I am expecting 1.2 million.
Should I reconsider storing the images in the database?
If they are stored in the database, what are the effects on performance?
Thanks in Advance
Wes
Does sql server has the data type similar to BLOB (Binary largerobject)which is available to DB2. BLOB in DB2 can support up to 2 G(variable-length data )if it does have, which one offers better functionalitiesany advice will be greatly appreciated!
View 4 Replies View RelatedHi,One of our third-party software vendors is planning to implement BLOBin their database for storing certain documents. We are not toothrilled about it, since it can be a drain on our resources, but Iwould like to get the expert opinion out there on the pros and cons ofimplementing this.Also, the database is in Full recovery mode and we back up thetransaction log every 15 minutes. We also do a process similar to logshipping. We have two servers to which these transaction logs arerestored to periodically. What will the impact on the transaction logsdue to changes to the BLOB fields.If you could also point me to any resources that talks in detail aboutperformance, backup and recovery in relation to BLOB that would begreat.Thanks in advanceKR
View 3 Replies View RelatedHi,
can anyone help ,me out here with some design consideration reguarding importing of BLOB data to a SQL server 2000 using T-SQL statements?
I want to make an import of some documents which are stored in a Access database, to an Ms SQL server 2000. The documents are stored in the access database as a OLE Object, by now I thought of using the base64String function to convert the data from the access field and write it to the T-SQL statements which will written in a text batch file. And then I apply the SQL Convert function something like:
INSERT INTO testBin VALUES(convert(image,'base64sting_encoded'))
go
Does this work? Is it correct what I am doing?
Thanks.
Can anyone get me pointed in the right direction or even better specific instructions on how to export BLOB's to .JPG's ? They are in SQL 2005 and I have about 1500 that I need to export. I ran across another site that said to use SSIS but I havent had much luck.
View 1 Replies View RelatedCan someone please show me an example on how to read & write blob data to a Database? For example if I have the query below (Northwind), how do I actually place the blob item in a picture box on a windows form?SELECT Picture FROM CategoriesWHERE CategoryID = 5
View 2 Replies View RelatedCan someone please give me an example in C# on how to retrieve an Image from a Table and store i into a Picture box on a windows form? In addition, how to insert a blob record into a table as well.
View 4 Replies View RelatedWhat's a good way to work with Blobs and TableAdapters, in terms of declaring compatible column types in SQL Server and DataTable fields?
View 2 Replies View RelatedWe are using DTS to transfer database from 6.5 to 7.0. The data of those tables with text datatype can not be transferred to the server with version 7.0 though the table structure is transferred. The error message we got is "Error at Destionation for Row Number 1. Error encountered so far in this task: 1. query based insertion or updating of BLOB values can not be supported.
The source we use is Microsoft ODBC driver for SQL Server.
Thanks in advance.
Su Ge
I'm trying to transfer a table from a sql 7 server to an sql 6.5 server. When I try to select OLE db as the destination it gives me an error saying I can't do OLE DB unless I have sql 7.... So I chose ODBC
When it tries to transfer the table I get this error:
QUERY BASED INSERTION OR UPDATING OF BLOB VALUES CAN NOT BE SUPPORTED
what the hell? Is this due to the transfer from 7 to 6.5? How do I get around this?
-----
What I'm trying to do is change the datatype of a table in this 6.5 database from smallint to integer... (I wasn't the idiot that designed this database with a smallint primary key) There is not enough room to copy the table into a new table, and when I ran through the above process it dropped the table and I can't restore it because I'm not the admin. Is there a way of changing the primary key datatype without using up a large amount of database space? or can I do a transfer from 7-6.5 some how?
This is a nightmare... I wish my client would just upgrade to 7 then this would have taken 5 seconds instead of all day long
Hi,
I know in Mysql one can use a blob field(instead of varchar) to insert big amounts of data into a field - e.g User Notes or Long detailed descriptions
How do I create a field using Enterprise Manager(MSSQL) to be able to handle this amounts of data ???
I can't seem to find the BLOB-option upon creating a field in MSSQL, am I missing something here ???
Many thanks
Hello,
I currently have a problem with blobs being cut off.
From powerbuilder, I am trying to pull in an image that is stored as a blob. This has always worked fine in our software, until a more recent version, and is now presenting me with this problem. Here are the details...
When the software is installed with a Sybase Database, everything is working great. It pulls in the full size, and there are no problems here.
However, when the software is installed with a SQL Server DB, problems arise.
The main problem: When using a ADO.NET DBMS interface to the SQL Server DB, the select statement is only pulling in 32000 bytes.
Secondary problem: This one may present a problem in the future, if and when i fix the first problem. To narrow it down to see if it was the ADO.NET interface giving me the problem, i connected to the same table on the same server, but using an ODBC interface as opposed to ADO.NET. This gave me the first 32768 bytes.
So a) ADO.NET when interfacing with SQL Server is only giving me the first 32000 bytes in my selectblob statement. I have narrowed it down to ADO.NET, as the code works fine with Sybase, and ODBC interfacing with SQL Server does not limit it at 32000 bytes.
and if I get a solution to that, something may then be limiting the blob read in size at 32768. Maybe, maybe not... but it is happening with ODBC|SQL Server.
Does anyone have any ideas. This is driving me wild. I have pounded google searching for ADO.NET known blob limitations but cannot find anything.
I'm dying here. Anyone who can help me out would be great. Thanks
Hi folks,
i have a problem with the result of my query.
There is a colum(a stored BLOB) witch appears like this:
8t¦–XEÄ
ð_JÑ |eÂ?ØÊ/TÅ® 0ù¯ó£1XðÃðpŸ8ãÖð'1ª@ˆ8^j֤K§ì©P=@Ÿú‡¿`T)áGä^ÄÞ˜ÖPfìrç(GC=8ȍ?‹T¼²¤÷ôœ1Ogu… J
K £J�8n1+CD"¹¯ÖE°-§¡�0(Ä¡‡6K? =L: Dþfþ¿€s¬ ð0ÀçPä]C·Y1ÄÅ¿(ßû‡Tâg@T $û?äþ0¯R@¥8NTÄhÄ “œã17D?i
I have a progam(QMF for Windows) in which i can selcet the colum and can chose bettween hexadezimal and binary.
Now my question: How can i make it works, that it is displayed as hexadezimal directly? An what is that above?
Many thanks in advance!
Is it possible to import BLOB data using SQL statements stored in a file to an SQL server. Can the actual INSERT statement contain binary data? Or how should I convert the binary data in order to work with an INSERT statement?
Thanks.