Binary Field Usage In SQL Server
Sep 19, 2005
Can anyone point me in the right direction to find documentation for the problem below?I need to store and retrieve ten fields of 16-bits each for testing 16 true-false conditions (a total of 160 bits in each record) so I think I'd like to use ten 2-byte binary fields (160 "bit" fields would be quite unmanageble, if even possible [I think there is some kind of limit to the number of fields in a single record]). I'm not quickly finding in the SQL Server's online documentation how to test for, use and update binary fields. I'll keep looking, but can anyone point me in the right direction? I'm using VB, if that makes any difference.
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Jul 23, 2005
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
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Jun 1, 2008
Application is ocr'ing tiff image files and then storing the resultant text data in a text field in SQL 2005 database. This field is then used with the full text catalog.
All works fine,
However, am I using the correct field type to store the text files for efficiency and space saving?
If I use a binary field, does this reduce the size of the database by compressing the text data in the binary field? Also, is there a limit as to the size of text file that I could store in a binary field?
It would be good to get feedback on this before I go too far down the wrong road.
So, text field to store the text data or binary field to store the actual text file?
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Jan 30, 2014
providing a query for fetching the data for CPU Usage, Memory usage, blocking and all details ...
I want to create a job which will run on a Node every 15 min and store data in a table for each instance...
DMV is not giving more stuff and xtended events not sure if i can store that data into a table?
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Jul 12, 2006
Hi,
I have asked this question on 3 forums now and never get an answer, I don't know what is so hard about this question but I will try it here.
I am using SHA512 in C# to convert a password and its salt to hashed. I need to store the password hash and the salt hash in the database in two fields. I was told to use binary field to store the hash data and that the output of SHA512 would ALWAYS be the same no matter how long the password is.
I modified this hash example to use only SHA512 and to work with byte array instead of plain text.
All I need to know now is what size I need to make my binary field to hold this password that is hashed.
http://www.obviex.com/samples/Code.aspx?Source=HashCS&Title=Hashing%20Data&Lang=C%23
Say I have a password which is 30 characters max, and a salt which is 16 characters max. The password and the hash are stored in seperate fields in the same table. They are both hashed using SHA512 and are both being stored as byte arrays in C#, what size to I need to make the binary data type in order to hold the password, and to hold the salt.
Thanks!
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Nov 15, 2006
hi
I have used the following code (mostly created by MSDN) to retrive a binary field from SQL database. it works but I have extra space between characters. for example if I save a text file with "Hello world" text, after retriving I have it like "H e l l o w o r l d". what is the problem??????
I am really looking forward your answers
private void retrive()
{
public void a()
{
SqlConnection connection = new SqlConnection("Some Connection string");
SqlCommand command = new SqlCommand("Select * from temp", connection);
// Writes the BLOB to a file
FileStream stream;
// Streams the BLOB to the FileStream object.
BinaryWriter writer;
// Size of the BLOB buffer.
int bufferSize = 50;
// The BLOB byte[] buffer to be filled by GetBytes.
byte[] outByte = new byte[bufferSize];
// The bytes returned from GetBytes.
long retval;
// The starting position in the BLOB output.
long startIndex = 0;
// Open the connection and read data into the DataReader.
connection.Open();
SqlDataReader reader = command.ExecuteReader(CommandBehavior.SequentialAccess);
while (reader.Read())
{
// Create a file to hold the output.
stream = new FileStream(
"C:\file.txt", FileMode.OpenOrCreate, FileAccess.Write);
writer = new BinaryWriter(stream);
// Reset the starting byte for the new BLOB.
startIndex = 0;
// Read bytes into outByte[] and retain the number of bytes returned.
retval = reader.GetBytes(0, startIndex, outByte, 0, bufferSize);
// Continue while there are bytes beyond the size of the buffer.
while (retval == bufferSize)
{
writer.Write(outByte);
writer.Flush();
// Reposition start index to end of last buffer and fill buffer.
startIndex += bufferSize;
retval = reader.GetBytes(0, startIndex, outByte, 0, bufferSize);
}
// Write the remaining buffer.
if (retval != 0)
writer.Write(outByte, 0, (int)retval - 1);
writer.Flush();
// Close the output file.
writer.Close();
stream.Close();
}
// Close the reader and the connection.
reader.Close();
connection.Close();
}
}
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Apr 26, 2007
I want to have an SSIS package that processes a file in the normal insert, update style. But at the end I want to store the file as a binary field to another table for archive purposes. I am having trouble finding a good way to do this. Any samples, ideas, or articles would be appreciated.
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Nov 6, 2006
hello dear friends
I am trying to save a binary file to database with the following code:
public static void memorystreamToDb()
{
MemoryStream mst = new MemoryStream();
UnicodeEncoding u = new UnicodeEncoding();
string Textn = "Test";
byte[] b = u.GetBytes(Textn);
mst.Write(b ,0,Textn.Length );
BinaryReader reader = new BinaryReader(mst);
byte[] file = reader.ReadBytes((int)mst.Length);
using (SqlConnection connection = new SqlConnection("Some Connection String"))
{
SqlCommand command = new SqlCommand("INSERT INTO temp (examplefile) Values(@File)", connection);
command.Parameters.Add("@File", SqlDbType.Binary, file.Length).Value = file;
connection.Open();
command.ExecuteNonQuery();
}
reader.Close();
mst.Close();
}
or with the other method from a real file (not memory stream)
public static void Addfile(string path)
{
CommonMethods_class k = new CommonMethods_class();
byte[] file = GetFile(path);
using (SqlConnection connection = new SqlConnection(k.Get_connection_string()))
{
SqlCommand command = new SqlCommand("INSERT INTO temp (examplefile) Values(@File)", connection);
command.Parameters.Add("@File", SqlDbType.Binary, file.Length).Value = file;
connection.Open();
command.ExecuteNonQuery();
}
}
and after running each of them seams that the file have been saved; but I can not retrive the files. I have tried some solutions from msdn but inside the created file is empty. the point that i really look for it is to just working with memory not in the disk before saving. and then retriving each field that I want.
looking forward your points
thank you in advance
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Feb 16, 2004
i need to store a bmp or zipped file in a field of a ms sql db. i read the file using vb6 o.net, and in my mind i think sto store it in binary mode. the files could be more of 12 mega. whitch kind of field a could use?
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Jul 23, 2005
This may be a stupid question but I can't find an easy answer for what Iwant to do. I need a blob data field that can store both binary and textdata like the sql_variant field. I am using vb.net to populate a sql table.I want to store both string and binary data.
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May 8, 2007
Hi all,
i have "String or binary data would be truncated" error when i try to execute an insert statment.
can i find witch field is affected by this error? (for return it to the user)
thank's all
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May 22, 2014
Server is SQL 2000
I have a table with 10 rows with a varbinary column
I wish to concatenate all the binary column into a single binary column and then write that to another table within the database. This application splits a binary file (Word or PDF document) into multiple segments (this is Column2 as below)
example as follows
TableA
Column1 Column2 Column3
aaa 001 <some binary value>
aaa 002 <some binary value>
aaa 003 <some binary value>
aaa 004 <some binary value>
aaa 005 <some binary value>
desired results in TableB
Column1 Column2
aaa <concatenated value of above binary columns>
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May 7, 2015
I'm using a bit-wise comparison to effectively store multiple values in one column. However once the number of values increases it starts to become too big for a int data type.you also cannot perform a bitwise & on two binary datatypes. Is there a better way to store the binary data rather than int or binary?
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Nov 2, 2007
I have a client program that writes to sql server database 10 records per second . i want to compute the CPU usage and the memory usage for the whole program or CPU usage,memory usage for the insert statement in the program .
Can anybody help me with this?
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Sep 7, 2007
Hello, When I am seeing SQL Server 2005 Management studio Server Dashboard> I am seeing my(USERS) databases and msdb database usage is very small % of in CPU Usage(%), Logical IO Performed (%) Usage pie chart.
90% of Total cpu usage is showing for Adhoc Queries. what excatly this means in Dashboard? if application uses more than it would have shown in Database level or not?
sicerely this dashboard is good, if any one is watching daily, please advice their experiences here.
Thanks in advance. Hail SQL Server!
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Sep 20, 2007
Here is my task I am storing pdf's in sql server. I would like to retrieve the binary data from sql server and write the pdf content into an existing aspx page to the appropriate pageview section. What is the best way to handle this. The code works below but it loads a new browser with the content. I need it to appear in it's tabbed section in the original aspx file. Any assistance you can give me would be greatly appreciated.
Thanks Jerry
oSQLConn.Open()Dim myreader As SqlDataReader
myreader = myCommand.ExecuteReader
Response.Expires = 0
Response.Buffer = True
Response.Clear()
Do While (myreader.Read())
Response.ContentType = ("application/pdf")Response.BinaryWrite(myreader.Item("img_content"))
Loop
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Feb 27, 2007
Hi,I am having some trouble with my ASP page sending a file to a SQL Server 2005 database running on another machine. An exception is generated as follows:A transport-level error has occurred when sending the request to the server. (provider: TCP Provider, error: 0 - An existing connection was forcibly closed by the remote host.) It seems to work ok with smaller files, but when I attempt to upload a 11MB file, it gives me the above exception. I upped the httpRuntime maxRequestLength in the web.config to 2048. Any Ideas? Here is my code:1 if (FileUploader.HasFile)
2 {
3
4 // call the stored proc
5 SqlConnection conn = new SqlConnection();
6 conn.ConnectionString = "Password=password;Persist Security Info=True;User ID=MyUser;Initial Catalog=MyDb;Data Source=MySqlServerMachine;Connect Timeout=300";
7 conn.Open();
8
9 SqlCommand cmd = new SqlCommand();
10 cmd.Connection = conn;
11 cmd.CommandType = CommandType.StoredProcedure;
12 cmd.CommandText = "spAddTestBinary";
13
14 SqlParameter param = new SqlParameter();
15 param.ParameterName = "@binaryParam";
16 param.SqlDbType = SqlDbType.VarBinary;
17 param.Direction = ParameterDirection.Input;
18 param.Value = FileUploader.FileBytes;
19 cmd.Parameters.Add(param);
20
21
22 cmd.ExecuteNonQuery();
23
24
25 conn.Close();
26 }
Here is my table:1 BinaryTable(
2 [id] [int] IDENTITY(1,1) NOT NULL,
3 [myBinary] [varbinary](max) NULL,
4 CONSTRAINT [PK_BinaryTable] PRIMARY KEY CLUSTERED
5 (
6 [id] ASC
7 )WITH (IGNORE_DUP_KEY = OFF) ON [PRIMARY]
8 ) ON [PRIMARY]
My stored proc:1 ALTER PROCEDURE [dbo].[spAddTestBinary]
2 -- Add the parameters for the stored procedure here
3 @binaryParam varbinary(MAX)
4 AS
5 BEGIN
6 -- SET NOCOUNT ON added to prevent extra result sets from
7 -- interfering with SELECT statements.
8 SET NOCOUNT ON;
9
10 -- Insert statements for procedure here
11 Insert into BinaryTable
12 (myBinary)
13 Values
14 (
15 @binaryParam
16 )
17 END
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May 9, 2007
I am storing data as binary in my sql server 2000 database, and now I wanted to retrieve the data- before I move on I just wanted to check whether the data is restored correctly.
Is there an easy way for that? A tool for sql 2000 or any other simple options?
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Jun 16, 2004
hello!
I am curious to know how I can find the length of a binary in Sql Server. The length doesn't work on binaries.
ie
select length(binary)
from Binarytable
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Jan 29, 2006
There are two datatypes for storing binary data type in the SQL Server:1. binary - for fixed length binary data2. varbinary - for variable length dataMy question is: how is data inserted into them? Do they have anydelimiters that go into the insert statement like strings and datetimeshave? What format (hex/decimal?) do they accept data in? Can you pleasegive me an insert statement example?
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Jun 27, 2007
I have been pulling my hair out on this.
I am trying to pass a binary value from an ASP.NET app to a VERY simple stored proc, and I can NOT get it to work!
Here is some of my code:
Code Snippet
ALTER PROCEDURE [dbo].[sp_SelectAppointments] @PID VarChar(50)
AS
BEGIN
--set @PID = 0x00000000000000B1
--PLEASE NOTE HERE THAT THE ABOVE VALUE(WHEN UNCOMMENTED) RETURNS RECORDS
--WHEN THE VALUE IS IN QUOTES (AS IT WOULD BE) IT DOES NOT WORK
SET NOCOUNT ON;
SELECT Appt_Date, Appt_Description, Rn_Appointments_Id
FROM Rn_Appointments
WHERE project = @PID --Project is a binary field.
END
I created a Dataset in VS2005, and here is the code that passes the value to the Dataset:
Code Snippet
Dim PID As String = Request.QueryString("pid")
PID = "0x00000000000000B1"
Dim da2 As New sp_SelectAppointmentsTableAdapter
GridView1.DataSource = da2.GetData2(PID)
GridView1.DataBind()
What am I missing?? Can anybody please help me out here?
Thank you.
Steve
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Oct 19, 2007
hello.
i have a _CommandPtr that has the type CommandTypeEnum::adCmdTex, and the CommandText a query("Select * from Table_1") and this select returns one row that has a binary data in it.
Code Block
_CommandPtr pCommand;
//Create the C++ ADO Command Object
pCommand.CreateInstance(__uuidof(Command));
pCommand->ActiveConnection = this->pConnection;
//Make the ADO C++ command object to accept stored procedure
pCommand->CommandType = CommandTypeEnum::adCmdText;
//Tell the name of the Stored Procedure to the command object
pCommand->CommandText = _bstr_t("select * from Table_1");
//get recordset
pRecordset = pCommand->Execute(NULL,NULL,CommandTypeEnum::adCmdText);
BYTE* buffer = NULL;
if(pRecordset != NULL)
{
while (!pRecordset->GetEndOfFile())
{
VARIANT var = pRecordset->Fields->GetItem("test")->Value;
void * pData = NULL;
SafeArrayAccessData(var.parray, &pData);
long size = GetArraySize(var, NULL);
buffer = new BYTE[size];
memcpy(buffer, pData, size);
SafeArrayUnaccessData(var.parray);
pRecordset->MoveNext();
}
pRecordset->Close();
}
where:
Code Block
long GetArraySize(const VARIANT& var, long * nElems)
{
if ( !(var.vt & VT_ARRAY) ) return -1;
long size = 0;
long dims = SafeArrayGetDim(var.parray);
long elemSize = SafeArrayGetElemsize(var.parray);
long elems = 1;
for ( long i=1; i <= dims; i++ )
{
long lbound, ubound;
SafeArrayGetLBound(var.parray, i, &lbound);
SafeArrayGetUBound(var.parray, i, &ubound);
elems *= (ubound - lbound + 1);
}
if ( nElems ) *nElems = elems;
size = elems*elemSize;
return size;
}
I enter in VARIANT var = pRecordset..... and if gives me a value... but when I put it in Memory explorer in VS, i only see this data " fe ee fe ee fe ee fe ee fe ee fe ee fe ee ...fe ee" and of course it brakes at
SafeArrayGetLBound(var.parray, i, &lbound);
Can someone tell me where I am doing a very bad thing?
P.S. I was able to read the binary data from the server using C#.NET 2.0.
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Sep 25, 2006
Hello.
I am using a SQL Server 2005 devenv and each time I open my ssis
package, the server mem usage jumps up to almost 400mb ram. On opening,
tries to validate each data flow task and that takes forever, I have
delayed validation however still takes time to load. I am currently
using terminal services to access visual studio and the project has two
ssis packages that myself and another developer are working on, could
this have something to do with this?
In saying this, everything worked perfectly a week ago, now its
extremely frustrating.
Anyone with feedback would be greatly appreciated.
Cheers
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Jun 7, 2006
I have recently installed SQL Server 2005 (Developer Ed) + SP1 onto a VMWare based Windows 2003 + SP1 server.
SQL Server works fine when connecting to it using Mangement Studio on Windows XP.
However, I have noticed strange CPU usage on the server which seems to be caused by Management Studio (either directly or indirectly).
When no-one is connecting to the server using Management Studio, the server happily ticks along with CPU usage around 1-5% range. However, as soon as someone connects to the SQL Server instance using Management Studio the CPU usage begin to go up and down constantly.
The CPU usage ranges from 5-50% and it goes up and down (fairly regularly) every few seconds. It does this even when nothing is actually being done in Management Studio. The moment Management Studio is closed, the CPU usage goes back to normal.
The processes on the server that appear to be causing the CPU spikes are services.exe and wmiprvse.exe.
On a possibly connected note (though possibly not), the Security log in the server's Event Viewer shows that there are logins occuring every minute or so (most of the logins are from my account).
Any ideas?
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Mar 15, 2007
Hey all, WE have a document management system where by Adminstrators can upload documents, once the document is uploaded the binary data is stored on in a folder on the web server. We used to stored the documents in the actaul db table, but we found that there were to many documents and it was using alot of space on db server. So my boss has decided we are now going to upload the binary data onto the web server. Currently we are donig this with new documents which have been added or documents which are gettinguploaded when reloading, but there are many documents in the db table which have not been updated and are still embedded in the db table. So i need to figure out how to go about copying the data storewd in the db table and storing it in web servers folder location. I've tried various things for a enitre day but im going round in circiles. MemoryStream mStream = new MemoryStream((Byte[])dtrResults["file"]); BinaryReader bReader = new BinaryReader(mStream); int intFileSize = (int)mStream.Length; Byte[] byteFile = (Byte[])dtrResults["file"]; i can get to this state but then how do i create a folder on the BinaryREader to then store the binary data of the file to the location. BinaryReader bReader2 = new BinaryReader(File.Open(strDocFolder + strSavedFileName, FileMode.Create)); int count2 = bReader2.Read(byteFile, 0, intFileSize); bReader2.Close();i've also tried this but when the file gets created in the folder there is no content. i do know that the file does contain content as ive tried this and downlaoding the file from that page acctually works string strContentTpe = WValue.WStr(dtrResults["contenttype"]); int intFileSize = VValue.VInt(dtrResults["filesize"]); / Byte[] byteFile = ((Byte[])dtrResults["file"]); //Downloads the data correctly Response.ClearContent(); Response.ClearHeaders(); Response.AddHeader("Content-Disposition", "attachment; filename="" + WValue.WStr(dtrResults["docfilename"]) + """); Response.AddHeader("Content-Length", WValue.WStr(intFileSize)); Response.ContentType = strContentTpe; Response.BinaryWrite(byteFile); I hope ive made some snese andthat someone can hlep me. Have a nice dayZal
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Sep 26, 2005
I work for a company that makes heat transfers for the imprinted apparel market. We're developing a database of merchandise images for all of our non-design inventory. Using Access we're going to be inserting thumbnails of psd (photoshop) files. We're wondering if there is any way to import multiple psd's into the sql server database into matching records like matching a column named "filename" and the actual filename of the file without having to upload each file individually. We want to be able to dump the files from the database of the matching records, also. This way, once our catalog designer has found which designs they need to put into the new catalog, it will dump the psd's for us. The same for our staffer who does color separations.
Any suggestions out there? If you need me to post further of what we're trying here, I will. This is for the bossman.
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Apr 14, 2014
I have been trying to store binary file in a folder from the SQL Server.
Here is the code I am using to do this but, it is not working. It doesn't show any error only shows 1 row(s) affected. The folder remains empty after running this query.
I have already configured server using
EXEC master.dbo.sp_configure 'show advanced options', 1
RECONFIGURE
SP_CONFIGURE 'Ole Automation Procedures', 1
GO
RECONFIGURE
GO
DECLARE @File VARBINARY(MAX),
[Code] .....
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Oct 15, 2014
I was assigned a project to read binary data file (2G) and select data from OrderID, OrderDate and Price three columns (there are about 50 columns) into SQL table.
Where to start? Do I need to convert entire binary data file into text file?
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Mar 25, 2015
The last two columns in one table is [StarText](varchar(20)) and [Star] (binary). It stored data like below:
StarTest---Star
***
**
Null
*****
How to write a update code to insert star image at column [Star]?
For example, at column [Star]
row1 insert 3 stars
row2 insert 2 stars
row3 keep null
row4 insert 5 stars
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Dec 21, 2005
I am using FileUpload control in ASP.net 2.0 to upload files and store them into SQL server database as an image. I am fine with MS office files, image files and etc. We have Product Center (Proe) engineering software to configure parts and the files generated through this software have PLT extension when I store these files, the file type is Plian/text. I am using Fileupload.PostedFile.Content to get the file type. How can I store PLT, TIF files in SQL server? Please help.
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Aug 29, 2006
(Appologies if this group isn't the best place for this post)Is it possible to use DAO 3.6 to access binary data (varbinary(max)) inSql Server 2005? I have images and sound in a Sql 2005 DB that I needto retrieve (and write) with DAO (ADO and ADO.Net are not options asthis is legacy code that can't be changed).Thx,Marcus
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Jun 10, 2005
hey guys,could anyone help me out ..?i have a serious problem with my SQL server DB ..it uses up all my memory (i see it in task manager) after a whole day of asp's triggering the db .. it should go down when there are no triggers anymore, right?please help :)Stallema
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May 9, 2003
Hi,
One of the production box running only sql server application, is showing 80% memory usage on the task manager-memory usage history right now.
We are running sql server 2000 standard version-sp3 with 2GB memory on this box. Server is not on the scheduled reboot at this point.
We have seen this behavior for this box last month that after task manager showing 90% memory usage contantly for several days, when server was manually rebooted, memory usage dropped to 35%. Now it's back to 80%.
Our DBA thinks that server should be rebooted on a regular schedule regardless of memory problem. Our network admin doesn't seem to agree with this. He is not ready to reboot the machine even with this high memory usage.
There is no noticable difference performancewise yet.
My questions are:
Is it bad that memory usage reaches from 35% constant to 80-90% or is it common? Should sql server be rebooted immediately to take care of it? Should sql server 2000 rebooted on regular basis regardless of any problems? Shouldn't sql server be releasing memory back to the OS even without rebooting? How do I find out whether server actually is going through memory problems and what is causing it?
Thanks in advance for your opinions,
Shaili
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