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Get newly created ID in SQL Server

Posted on 2008-10-22
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Last Modified: 2012-06-27
Hi

I am building an MS Access/SQL Server app.  If I create a new record  in the SQL Server backend using VBA behind an Access form how can I get the newly created ID and return it to Access?

Cheers
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Question by:kenabbott
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Expert Comment

by:Muhammad Kashif
Comment Utility
Use
Select @@IDENTITY


You can use like this with your insert query

Insert into Table values(1,2,.....)
Select @@IDENTITY
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dportas earned 500 total points
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Use SCOPE_IDENTITY() wherever possible rather than @@IDENTITY.

SCOPE_IDENTITY() returns the last inserted IDENTITY value in the current scope, which means its behaviour won't be affected by any current or future triggers on the table. If you are using SQL stored procs for data access then SCOPE_IDENTITY() should normally be preferred over @@IDENTITY.
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by:kenabbott
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So is the only way of doing this via a stored procedure??  Its not by getting a returned value with a pass thru query for example
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LVL 84
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How are you creating the new record? Show the relevant portion of the code.

Does the Jet/OLEDB provider support SCOPE_IDENTITY? I'm not sure ... I know it supports IDENTITY:

http://support.microsoft.com/default.aspx?scid=kb;EN-US;232144

But I've not found an article stating it supports SCOPE_IDENTITY. That said, you could of course get this via a Stored Proc or something ...
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Author Comment

by:kenabbott
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At the moment I'm still working on this but basically what I need to achieve is as follows...

1.  User enters data onto an access form
2.  Data saved in SQL as new record
3.  New ID returned
4.  New ID saved in a seperate SQL table (along with other data)

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LVL 84
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Again: How are you creating the new record? Are you using bound forms? If you are then your Form's Recordset will contain the new value after saving ...
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Author Comment

by:kenabbott
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Sorry - no it is an unbound form so I will be using a SQL statement of some sort
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LVL 84
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I'd certainly agree with dportas as to using SCOPE_IDENTITY, but as I said earlier I'm not sure it's supported. You could do this:

Dim rst As ADODB.Recordset
Dim lNewID As Long

<Insert your record>

Set rst =New ADODB.Recordset
rst.Open "SELECT @@IDENTITY AS NewID", YourConnectionObject
lNewID = rst("NewID")

This could run into issues if you have a lot of users banging away on this, since as others have said @@IDENTITY gets the last inserted value - so if you insert your record, and then I insert a record immediately after that BEFORE YOUR CALL TO @@IDENTITY then you'll get the ID of the record I inserted. If you use a Stored Proc, you can use SCOPE_IDENTITY, which insures that you get the correct value.

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by:dportas
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@@IDENTITY is scoped to the connection so you will never get the identity value of a row inserted by someone else unless you are connection pooling.

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LVL 84
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Good to know ...
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LVL 84
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So why did you accept the SCOPEIDENTITY answer? Is that what you ended up using?
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Author Comment

by:kenabbott
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yes
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