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Copy "Long binary Data"

Posted on 2008-10-23
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Last Modified: 2008-10-25
I have a database where i store images (OLE OBJECT) and the field inside the table has the value "Long Binary Data".
I am trying to copy everything to another database and i would like to copy the field which stores the images as Long Binary Data.
Is there a way to do this ?

Thanks in advance
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Question by:viroz
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6 Comments
 
LVL 46

Expert Comment

by:tbsgadi
ID: 22783724
Hi viroz,

A regular copy or append query should work

Gary
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LVL 1

Author Comment

by:viroz
ID: 22783748
No right click "Copy" available.
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LVL 46

Assisted Solution

by:tbsgadi
tbsgadi earned 150 total points
ID: 22783945
If you're copying straight from the table then select the whole column (Copy is available)
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LVL 1

Author Comment

by:viroz
ID: 22784585
Ijust want to copy seperate fields. Is there a way to do this ?
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LVL 46

Expert Comment

by:tbsgadi
ID: 22784831
Filter (on the ID) for the record you want & then select the column
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Accepted Solution

by:
Jim Dettman (Microsoft MVP/ EE MVE) earned 350 total points
ID: 22785143
You looking to do this manually or via code?  If code, then you want to use GetChunk() and AppendChunk().  I've attached a sample of code from the on-line help.

JimD.
Sub AppendChunkX()
 
	Dim dbsNorthwind As Database
	Dim rstEmployees As Recordset
	Dim rstEmployees2 As Recordset
 
	Set dbsNorthwind = OpenDatabase("Northwind.mdb")
 
	' Open two recordsets from the Employees table.
	Set rstEmployees = _
		dbsNorthwind.OpenRecordset("Employees", _
		dbOpenDynaset)
	Set rstEmployees2 = rstEmployees.Clone
 
	' Add a new record to the first Recordset and copy the 
	' data from a record in the second Recordset.
	With rstEmployees
 
.AddNew
		!FirstName = rstEmployees2!FirstName
		!LastName = rstEmployees2!LastName
		CopyLargeField rstEmployees2!Photo, !Photo
		.Update
 
		' Delete new record because this is a demonstration.
		.Bookmark = .LastModified
		.Delete
		.Close
	End With
 
	rstEmployees2.Close
	dbsNorthwind.Close
 
End Sub
 
Function CopyLargeField(fldSource As Field, _
	fldDestination As Field)
 
	' Set size of chunk in bytes.
	Const conChunkSize = 32768
 
Dim lngOffset As Long
	Dim lngTotalSize As Long
	Dim strChunk As String
 
	' Copy the photo from one Recordset to the other in 32K 
	' chunks until the entire field is copied.
	lngTotalSize = fldSource.FieldSize
	Do While lngOffset < lngTotalSize
		strChunk = fldSource.GetChunk(lngOffset, conChunkSize)
		fldDestination.AppendChunk strChunk
		lngOffset = lngOffset + conChunkSize
	Loop
 
End Function

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