Question

how to assign a GUID from Access2000 to SQL server

Asked by: bhive

Is  it possible to assign a guid which is in the form of a string variable in Access to a guid field in a linked sql server table ?
I have a link to sql table in access. The sql table has a field of type Guid.
In my Access code -
  set rs = db.OpenRecordset("SELECT * from Table1;", dbOenDynaset)
  rs.AddNew
  rs![GuidField] = "{D345 ..... xxxx-xxxx}"  '<--- Is this allowed ???
  rs.Update  '<--- I get an error here, thats why i suspect the previous line.

The call to Update causes this error -
" Runtime error 3146
  ODBC call failed"

I am not sure if its because the guid assignment problem.
My first guess is that its because of type mismatch.

Pl let me know either way.

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Asked On
2002-10-27 at 00:25:19ID20383154
Tags

access

,

error

,

sql

Topic

Microsoft Access Database

Participating Experts
3
Points
0
Comments
5

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Answers

 

by: JDettmanPosted on 2002-10-27 at 05:01:00ID: 7374558

A GUID is a byte array and when working with it you must use conversion functions.  Access has two built in functions to help handle them: GUIDFromString() and StringFromGUID().  Take a look at the on-line help for some examples.

Also, the following will be of interest:

ACC2000: "????????" Is Displayed as the Value of a SQL Server GUID Field
http://support.microsoft.com/default.aspx?scid=kb;en-us;Q278099

HOWTO: Use GUIDs w/ Access, SQL 6.5 and SQL 7
http://support.microsoft.com/default.aspx?scid=kb;en-us;Q197916

  The second article will be the most helpfull as it has lots of sample code and downloadable examples.

Jim.

 

by: bhivePosted on 2002-10-27 at 19:59:13ID: 7376991

Jdetteman,
I am getting a data type conversion error when I used the function GUID2ByteArray() shown in the second link given by you

    Dim bytGUID() as Byte
    bytGUID = GUID2ByteArray("2DBC81CBB56C47079E60DABEA7A91D4A")

    strSQL = "SELECT * FROM TrialTable1;"
    Set db = CurrentDb
    Set rs = db.OpenRecordset(strSQL, dbOpenDynaset, dbSeeChanges)
    With rs
        .AddNew
        rs!guidField = bytGUID  '<----- Error as described below.
     .Update
    end with

-----------------------------
'Run time error '3421'
 Data type conversion error'
-----------------------------

TrialTable1 is the table Linked from sql8.0 into A2k.
guidField is the uniqueidentifier field in TrialTable1.

In the debug mode, i can see the byte array (bytGUID) getting filled right, but when i assign it to the recordset field, i get the error.

I tried to use the GUIDFromString() function as -
    rs!guidField = Application.GUIDFromString("{2DBC81CB-B56C-4707-9E60-DABEA7A91D4A}")
and I get the same Data Type conversion error.

I tried to use the ADO (2.7) and get a runtime error
 'Multiple-step OLE DB operation generated errors. Check each oledb status value, if available'

I am using Dao 3.6.
I have increased the points to 75 to make-do.

 

by: bhivePosted on 2002-10-27 at 20:56:31ID: 7377121

hell, long hours.
Jdettman,
 I AM able to assign a string variable to the guid field. The problem was that there were one field that was non-nullable and i was not caring for it. Thats the reason why the odbc call was failing on .Update. Allowing it to be nullable, makes peace with world.
From the links you provided, i realize that i am using Jet 4.0 and hance am immune to the pitfalls of guid in earlier versions of jet. Correct if my deduction is wrong.
I feel much released now.
I appreciate your help and being around. thx. I did learn thr these times. hard way though.

Well, saga doesnot end here. I have a new trouble now and hence a new posinting.

anyway, I wish to delete this question.

 

by: nico5038Posted on 2003-01-04 at 14:06:58ID: 7669392


No comment has been added lately, so it's time to clean up this TA.
I will leave a recommendation in the Cleanup topic area that this question is:
 - PAQ'd and pts refunded
Please leave any comments here within the
next seven days.

PLEASE DO NOT ACCEPT THIS COMMENT AS AN ANSWER !

Nic;o)

 

by: NetminderPosted on 2003-01-12 at 19:10:06ID: 7714417

Per recommendation, points refunded and question closed.

Netminder
EE Admin

20120131-EE-VQP-002

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