Return the uniqueidentifier generated by a default on insert

Question

Goal

Retrieve the latest guid value in real time after you have inserted the value in the table

Problem

Don't know how to do it

Info

• The code should only specify new values for address and zipcode
• There can be lots of data in the table

Table

CREATE TABLE [AddressBook]
(
    [testID] [uniqueidentifier] NOT NULL default newid(),
    [address] [nvarchar](50) NULL,
    [zipcode] [nvarchar](50) NULL
)

Answer 1

I think you are looking for output

DECLARE @MyTableVar table([testID] [uniqueidentifier]);
 INSERT [AddressBook] ([address], [zipcode])
        OUTPUT INSERTED.[testID] INTO @MyTableVar
 VALUES (N'address', N'zipcode');

--Display the result set of the table variable.
 SELECT [testID] FROM @MyTableVar;

GO

uniqueidentifier may not be the most efficient id here but this is an answer to the stated question

Answer 2

CREATE TABLE [dbo].[tbl_Clients](
    [ClientID] [uniqueidentifier] NULL,
    [ClientName] [varchar](250) NULL,
    [ClientEnabled] [bit] NULL
) ON [PRIMARY]

GO

CREATE PROCEDURE [dbo].[sp_ClientCreate]
@in_ClientName varchar(250) = "New Client 123",
@in_ClientEnabled bit,
@out_ClientId uniqueidentifier OUTPUT
AS

SET @out_ClientId = NEWID();

INSERT
INTO tbl_Clients(ClientId, ClientName, ClientEnabled) 
VALUES(
@out_ClientId, 
@in_ClientName,
@in_ClientEnabled)


DECLARE @return_value int,
        @out_ClientId uniqueidentifier

EXEC    @return_value = [dbo].[sp_ClientCreate]
        @in_ClientName = N'111',
        @in_ClientEnabled = 1,
        @out_ClientId = @out_ClientId OUTPUT

SELECT  @out_ClientId as N'@out_ClientId'

SELECT  'Return Value' = @return_value

GO 

Result:-59A6D7FE-8C9A-4ED3-8FC6-31A989CCC8DB

Answer 3

Another way,

DECLARE @id varchar(50) = CONVERT(VARCHAR(50), NEWID());

INSERT INTO [yourtable]
( [id])
VALUES
(@id);

SELECT @id;