Binary Data Type

Jan 23, 2006

I am trying to store a byte array in a database. I want to use binary to store the data but I am confused about the type. The byte array I am trying to store is a password hash from SHA512.

I hash a plain text value then store the result in a byte array. I then want to store the byte array in the database as binary but I am confused when its asking for the size of the binary field. In nvarchar a size of 2 would mean 2 characters.

How should I choose the size of this binary field, and what does the size mean. If I choose a size of 6 does that mean 6 characters, like 010110. Or is it stored differently?

The maximum size of a plain text password is 30 characters, and the salt used to generate the SHA512 hash has a maximum size of 16, but I don't know the exact size of the salt because its randomly picked when the salt is generated.

I need to make sure the size of my binary field will hold the largest possible password hash, but I don't want it too large so its never completely used.

How is this data stored in the binary field, and what size binary field should I choose to make sure there are no problems with the password hash being truncated, yet making sure I'm not just wasting by creating a field thats too large.

Thanks!

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Binary Data Type

Jul 24, 2007

Hello Dears,
I was Maked Pictures table in sql server 2005 with Two Col pic_Id (int) and picture(binary)
i need now ro insert image into this table by Asp.net under VB.net Code  i have in my form  FileUpload and button control
and this is my CodeProtected Sub btnLoad_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnLoad.Click
 Dim content() As Byte = ReadBitmap2ByteArray(FileUpload1.PostedFile.ContentType)
StoreBlob2DataBase(content)
End SubFunction ReadBitmap2ByteArray(ByVal FileName As String) As Byte()
Dim image As Drawing.Bitmap = New Drawing.Bitmap(FileName)Dim stream As IO.MemoryStream = New IO.MemoryStream()
image.Save(stream, System.Drawing.Imaging.ImageFormat.Bmp)Return stream.ToArray
End Function
 Sub StoreBlob2DataBase(ByVal content As Byte())
con.Open()Dim cm As New SqlCommand("Insert into Pictures(Pic_Id,picture) values(@id,@pic)", con)
cm.Parameters.AddWithValue("@ID", 1)Dim p1 As New SqlParameter
p1.ParameterName = "@pic"
p1.SqlDbType = Data.SqlDbType.Binary
p1.Value = content
p1.Size = content.Length
cm.Parameters.Add(p1)
cm.ExecuteNonQuery()
End Sub
 
when i make run to my website it give me an Exeption in this statement
Dim image As Drawing.Bitmap = New Drawing.Bitmap(FileName)
it tell me that Parameter is not valid
  i need help about this please
with my Best regard
khalil
 

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Jan 29, 2006

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Feb 13, 2005

Hi, in reference to the article:

http://aspnet.4guysfromrolla.com/articles/103002-1.2.aspx

I would like to know how to create a 'password' column where the data type is a binary type of length 16
This is my table:

CREATE TABLE Staff
(
Namevarchar (50)PRIMARYKEY,
Password ???? NOT NULL,
Role varchar (50)NOT NULL
)

Please review my code. Thanks in advance for helping me out here!
-Gabian-

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Hi. how can i store binary data to another field with image data types.


here is my sample code


--note: [CUD_DOCUMENT] and [RES_DOCUMENT] are image data type

DECLARE @CUD_DOCUMENT binary

SELECT @CUD_DOCUMENT = CUD_DOCUMENT FROM CUD_CONTINUOUS_UPLOAD_DOCUMENTS

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[RES_DOCUMENT] -- image data type
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@CUD_DOCUMENT)

thnx for the help.

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Jul 23, 2005

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Dec 14, 2005

After testing out the application i write on the local pc. I deploy it to the webserver to test it out. I get this error.

System.Data.SqlClient.SqlException: The conversion of a char data type to a
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Notes: all pages that have this error either has a repeater or datagrid which load data when page loading.

At first I thought the problem is with the date, but then I can see
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just fine.

anyone having this problem before?? hopefully you guys can help.

Thanks,

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Hi,

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this.court0TableAdapter1.Update(this.mycourtsDataSet1.Court0);

this.mycourtsDataSet1.AcceptChanges();

this.court0TableAdapter1.Fill(this.mycourtsDataSet1.Court0);


This did not happen with VS2005/CE3.01.

I have tried changing all references to decimal (or money in CE3.5) without luck.

I'm beginning to think that string may be the way to go!!!!!!!

Can someone shed some light on my problem.

Thanks,

Later:

It's necessary to update the datatable adapter as the 3.01 and 3.5 CE are not compatible.

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Mar 7, 2007

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I need to copy rows from Oracle to SQL Server using SSIS. I used the Data Conversion transformation editor to change it to DT_DATE, but the rows are not being inserted to the destination.

On Error, If I fail the component, then the error is :

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Regards

RH

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in my SQL database I have the date feild as datetime and the version as nvarchar(max)
this is the code in the vb page .. Can you please tell me how to solve this problem?Imports System.Data.SqlClient
Imports system.web.configuration

Partial Class Admin_emag_insert
Inherits System.Web.UI.Page

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Record_DateTextBox.Text = DateTime.Now

End Sub

Protected Sub clearButton_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles clearButton.Click
Me.VersionTextBox.Text = ""
End Sub

Protected Sub addButton_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles addButton.Click
Dim objConnection As SqlConnection
Dim objDataCommand As SqlCommand
Dim ConnectionString As String
Dim record_date As Date
Dim version As String
Dim emagSQL As String

'save form values in variables
record_date = Record_DateTextBox.Text
version = VersionTextBox.Text

ConnectionString = WebConfigurationManager.ConnectionStrings("HRDBConnectionString").ConnectionString

'Create and open the connection
objConnection = New SqlConnection(ConnectionString)
objConnection.Open()
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'Create and execute the command
objDataCommand = New SqlCommand(emagSQL, objConnection)
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Me.VersionTextBox.Text = ""

End Sub
End Class
 

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I'm using SQL server 2005.

Thanks in advance..

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Oct 9, 2007

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I've tried to use cast in the following way, (rsbirthday is the field name, panelists is the table), but to no avail.


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I'm rather new to all things SQL, so I only have the vaguest idea of what I'm actually doing.

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May 21, 2008

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I am not running a sql to insert or update the table. This is through the EDI.

The data type is varchar(100). I enter one character and it errors on me. So this isn't a string being too long problem.

Any ideas?



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Feb 21, 2006

When using AquaData or JDBC (inet tds driver), when doing an insert using SqlServer 2005, I get error "String or binary data would be truncated" when the data is actually OK. There are no triggers, etc. that would confuse the situation. It works fine in SqlServer 2000.

The scenario is as follows:

Create table:
create table test3 (
name varchar (18) ,
tbname varchar (18)
)

Create and populate table:
create table maxtable (
tablename varchar (18) not null,
[...]
)

Try to insert into test3:
insert into test3 (name, tbname)
select i.name, o.name
from dbo.sysindexes i, sysobjects o, maxtable m
where i.indid > 0 and i.indid < 255
and i.id = o.id and i.indid = 1
and o.name = lower(m.tablename)

And I get the error "String or binary data would be truncated." The values being selected for i.name and o.name have maximum length of 18. There are other rows in sysindexes and sysobjects with longer values, but they are not being selected.

The error does not occur with SQL Server Management Studio, and does not occur using SqlServer 2000.

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Jan 28, 2008

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May 22, 2014

Server is SQL 2000

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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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Apr 16, 2008

Hi,

The table in SQL has column Availability Decimal (8,8)

Code in c# using sqlbulkcopy trying to insert values like 0.0000, 0.9999, 29.999 into the field Availability
we tried the datatype float , but it is converting values to scientific expressions€¦(eg: 8E-05) and the values displayed in reports are scientifc expressions which is not expected
we need to store values as is


Error:
base {System.SystemException} = {"The given value of type SqlDecimal from the data source cannot be converted to type decimal of the specified target column."}

"System.InvalidOperationException: The given value of type SqlDecimal from the data source cannot be converted to type decimal of the specified target column. ---> System.InvalidOperationException: The given value of type SqlDecimal from the data source cannot be converted to type decimal of the specified target column. ---> System.ArgumentException: Parameter value '1.0000' is out of range.
--- End of inner exception stack trace ---
at System.Data.SqlClient.SqlBulkCopy.ConvertValue(Object value, _SqlMetaData metadata)
--- End of inner exception stack trace ---
at System.Data.SqlClient.SqlBulkCopy.ConvertValue(Object value, _SqlMetaData metadata)
at System.Data.SqlClient.SqlBulkCopy.WriteToServerInternal()
at System.Data.SqlClient.SqlBulkCopy.WriteRowSourceToServer(Int32 columnCount)
at System.Data.SqlClient.SqlBulkCopy.WriteToServer(DataTable table, DataRowState rowState)
at System.Data.SqlClient.SqlBulkCopy.WriteToServer(DataTable table)
at MS.Internal.MS
COM.AggregateRealTimeDataToSQL.SqlHelper.InsertDataIntoAppServerAvailPerMinute(String data, String appName, Int32 dateID, Int32 timeID) in C:\VSTS\MXPS Shared Services\RealTimeMonitoring\AggregateRealTimeDataToSQL\SQLHelper.cs:line 269"


Code in C#

SqlBulkCopy bulkCopy = new SqlBulkCopy(sqlConnection, SqlBulkCopyOptions.Default);
DataRow dr;
DataTable dt = new DataTable();
DataColumn dc;

try
{

dc = dt.Columns.Add("Availability", typeof(decimal));
€¦.

dr["Availability"] = Convert.ToDecimal(s[2]); ------ I tried SqlDecimal
€¦€¦€¦.

}
bulkCopy.DestinationTableName = "dbo.[Tbl_Fact_App_Server_AvailPerMinute]";
bulkCopy.WriteToServer(dt);



thx



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Jul 6, 2006

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I have tried various data type settings on my flat file connection, too. I have tried DT_BOOL and the integer datatypes. Nothing seems to work.

I hope someone can help me work through this.

Thanks in advance,

SK



SSIS package "Package3.dtsx" starting.

Error: 0xC002F304 at Bulk Insert Task, Bulk Insert Task: An error occurred with the following error message: "Cannot fetch a row from OLE DB provider "BULK" for linked server "(null)".The OLE DB provider "BULK" for linked server "(null)" reported an error. The provider did not give any information about the error.The bulk load failed. The column is too long in the data file for row 1, column 24. Verify that the field terminator and row terminator are specified correctly.Bulk load data conversion error (type mismatch or invalid character for the specified codepage) for row 1, column 23 (cancelled).".

Error: 0xC002F304 at Bulk Insert Task 1, Bulk Insert Task: An error occurred with the following error message: "Cannot fetch a row from OLE DB provider "BULK" for linked server "(null)".The OLE DB provider "BULK" for linked server "(null)" reported an error. The provider did not give any information about the error.The bulk load failed. The column is too long in the data file for row 1, column 24. Verify that the field terminator and row terminator are specified correctly.Bulk load data conversion error (type mismatch or invalid character for the specified codepage) for row 1, column 23 (cancelled).".

Task failed: Bulk Insert Task 1

Task failed: Bulk Insert Task

Warning: 0x80019002 at Package3: The Execution method succeeded, but the number of errors raised (2) reached the maximum allowed (1); resulting in failure. This occurs when the number of errors reaches the number specified in MaximumErrorCount. Change the MaximumErrorCount or fix the errors.

SSIS package "Package3.dtsx" finished: Failure.

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Mar 30, 2007

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The code I'm using is:



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Try

conn.Open()

sqlcommand.ExecuteNonQuery()

conn.Close()

Catch ex As Exception

MessageBox.Show(ex.Message)

End Try



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The server at the client is running Windows Server 2000 UK . My local machiine is running WIndows XP Dutch.

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DECLARE @SelList varchar(max)
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WHEN DATA_TYPE in ('char', 'varchar', 'nvarchar','uniqueidentifier', 'nchar') THEN 1WHEN DATA_TYPE in ('datetime', 'smalldatetime') THEN 2
WHEN DATA_TYPE in ('text', 'ntext') THEN 3WHEN DATA_TYPE in ('sql_variant') THEN 4
WHEN DATA_TYPE in ('image') THEN 5ELSE 6
END
FROM INFORMATION_SCHEMA.COLUMNS c WITH (NOLOCK)
INNER JOIN syscolumns sc WITH (NOLOCK)
ON c.COLUMN_NAME = sc.name
INNER JOIN sysobjects so WITH (NOLOCK)ON sc.id = so.id
AND so.name = c.TABLE_NAMEWHERE table_name = @strTableName
AND DATA_TYPE <> 'timestamp'AND sc.IsComputed = 0
ORDER BY ORDINAL_POSITIONFOR READ ONLYOPEN CR_Table
 
FETCH NEXT FROM CR_Table INTO @ColName, @IsChar
 
WHILE (@@fetch_status <> -1)
BEGIN
 IF @@fetch_status <> -1
BEGINIF @SelList = 'SELECT'
BEGIN
SELECT @Fields = @Fields + '[' + @ColName + ']' + ', 'SELECT @SelList = CASE @IsChar
WHEN 1 THEN @SelList + ' ISNULL('''''''' + REPLACE(['+ @ColName + '],'''''''', '''''''''''' ) + '''''''',''NULL'') ' + ' COLLATE database_default + '
WHEN 2 THEN @SelList + 'ISNULL('''''''' + CONVERT(VARCHAR(20),['+ @ColName + '])+ '''''''',''NULL'') ' + ' COLLATE database_default + '
WHEN 3 THEN @SelList + ' ISNULL('''''''' + REPLACE(CONVERT(VARCHAR(MAX),['+ @ColName + ']),'''''''', '''''''''''')+ '''''''' ,''NULL'') '+ ' COLLATE database_default + '
--WHEN 3 THEN @SelList + ''' CONVERT(VARCHAR(MAX),['+ @ColName + ']) '''
WHEN 4 THEN @SelList + ' ISNULL('''''''' + REPLACE(CONVERT(VARCHAR(8000),['+ @ColName + ']),'''''''', '''''''''''')+ '''''''' ,''NULL'') '+ ' COLLATE database_default + '
WHEN 5 THEN @SelList + '''MyImageData'''''
ELSE @SelList + ' ISNULL(CONVERT(VARCHAR(2000),['+ @ColName + '],0),''NULL'')' + ' COLLATE database_default + ' END
END
ELSE
BEGIN
SELECT @Fields = @Fields + '[' + @ColName + ']' + ', 'SELECT @SelList = CASE @IsChar
WHEN 1 THEN @SelList + ''',''' + ' + ' + ' ISNULL('''''''' + REPLACE(['+ @ColName + '],'''''''', '''''''''''' ) + '''''''',''NULL'') ' + ' COLLATE database_default + '
WHEN 2 THEN @SelList + ''',''' + ' + ' + 'ISNULL('''''''' + CONVERT(VARCHAR(20),['+ @ColName + '])+ '''''''',''NULL'') ' + ' COLLATE database_default + '
WHEN 3 THEN @SelList + ' ISNULL('''''''' + REPLACE(CONVERT(VARCHAR(MAX),['+ @ColName + ']),'''''''', '''''''''''')+ '''''''' ,''NULL'') '+ ' COLLATE database_default + '
--WHEN 3 THEN @SelList + ''' CONVERT(VARCHAR(MAX),['+ @ColName + ']) '''
WHEN 4 THEN @SelList + ''',''' + ' + ' + ' ISNULL('''''''' + REPLACE(CONVERT(VARCHAR(8000),['+ @ColName + ']),'''''''', '''''''''''')+ '''''''' ,''NULL'') '+ ' COLLATE database_default + '
WHEN 5 THEN @SelList + ''',''' + '''MyImageData'''''
ELSE @SelList + ''',''' + ' + ' + ' ISNULL(CONVERT(VARCHAR(2000),['+@ColName + '],0),''NULL'')' + ' COLLATE database_default + ' END
ENDIF @IsChar = 5
SET @strImageSQL = 'SELECT ' + @ColName + ' FROM ' + @strTableName
END
 
FETCH NEXT FROM CR_Table INTO @ColName, @IsChar
END
 
CLOSE CR_TableDEALLOCATE CR_Table
 
SELECT @Fields = SUBSTRING(@Fields, 1,(len(@Fields)-1))
SELECT @SelList = SUBSTRING(@SelList, 1,(len(@SelList)-1))
SELECT @SelList = @SelList + ' FROM ' + @strTableNameSELECT @InsertStmt = @InsertStmt + @Fields + ')'
 
SET NOCOUNT ON
--now we need to create and load the temp table that will hold the data
--that we are going to generate into an insert statement
 
CREATE TABLE #TheData (TableData varchar(MAX))
INSERT INTO #TheData (TableData) EXEC (@SelList)
IF @strImageSQL <> ''
BEGIN
CREATE TABLE #ImageData (TableData image)
INSERT INTO #ImageData (TableData) EXEC (@strImageSQL)
END
--Cursor through the data to generate the INSERT statement / VALUESDECLARE CR_Data CURSOR FAST_FORWARD FOR SELECT TableData FROM #TheData FOR
READ ONLY
OPEN CR_Data
FETCH NEXT FROM CR_Data INTO @tableDataIF @strImageSQL <> ''
BEGIN
DECLARE CR_ImageData CURSOR FAST_FORWARD FOR SELECT TableData FROM #ImageData FORREAD ONLY
OPEN CR_ImageDataFETCH NEXT FROM CR_ImageData INTO @ImageData
END
 
WHILE (@@fetch_status <> -1)
BEGIN
IF (@@fetch_status <> -2)BEGIN
IF @strImageSQL <> ''
BEGINPRINT @InsertStmt
PRINT 'VALUES '
PRINT '('
PRINT SUBSTRING(@tableData,1,CHARINDEX('MyImageData',@tableData)-2)PRINT @ImageData
PRINT SUBSTRING(@tableData,CHARINDEX('MyImageData',@tableData) + 12,LEN(@tableData))
PRINT ')' + CHAR(13)
END
ELSE
PRINT @InsertStmt + ' VALUES (' + @tableData + ')' + CHAR(13)
 
 IF @RequiredGo = 1
PRINT 'GO'
 
ENDFETCH NEXT FROM CR_Data INTO @tableData
IF @ImageData <> '' FETCH NEXT FROM CR_ImageData INTO @ImageData
 
-- IF @TextData <> ''
-- FETCH NEXT FROM CR_TextData INTO @TextData
END
CLOSE CR_Data
DEALLOCATE CR_DataIF @ImageData <> ''
BEGINCLOSE CR_ImageData
DEALLOCATE CR_ImageDataEND
 
IF @bitIdentity = 1
BEGIN
PRINT 'SET IDENTITY_INSERT [' + @strTableName + '] OFF '
END
 
PRINT '---- ** End of Inserts ** ----'
RETURN (0)
 
=========== End of Procedure =======================
Any help will be appreciated.

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