autonumber template #1: ..
autonumber template #2: <1DIGIT-YEAR><1DIGIT-MONTH>.

The Script

set ANSI_NULLS ON
set QUOTED_IDENTIFIER ON
go

-- =============================================
-- Author:		Lucky
-- Create date: October 2008
-- Description:	Create autonumber
-- =============================================
CREATE PROCEDURE [dbo].[sp_create_numbering_row]
	-- Add the parameters for the stored procedure here
	@no VARCHAR(20) = NULL OUTPUT,
	@tablename VARCHAR(100),
	@numberfieldname VARCHAR(100),
	@numberlength INT,
	@initialdigit VARCHAR(3),
	@templatenumber INT

AS
BEGIN
	-- SET NOCOUNT ON added to prevent extra result sets from
	-- interfering with SELECT statements.
	SET NOCOUNT ON;

	-- AUTONUMBERING TEMPLATE #1 ..
	-- AUTONUMBERING TEMPLATE #2 <1YEAR><1MONTH>.

	DECLARE @sql NVARCHAR(MAX);
	DECLARE @result INT;
	DECLARE @next INT;
	DECLARE @nextnumber NVARCHAR(20);
	DECLARE @yearlastdigit VARCHAR(1);
	DECLARE @monthdigit NVARCHAR(2);

	SET @monthdigit=MONTH(GETDATE())
	IF(@monthdigit=10) SET @monthdigit='0'
	ELSE IF(@monthdigit=11) SET @monthdigit='A'
	ELSE IF(@monthdigit=12) SET @monthdigit='B'

	SET @yearlastdigit=(SELECT RIGHT(YEAR(GETDATE()),1))

	IF(@templatenumber=1)
	SET @sql = 'SELECT @result=CAST(RIGHT('+@numberfieldname+','+CAST(@numberlength as NVARCHAR(2))+') AS INT) FROM ['+@tablename+'] WHERE '+@numberfieldname+' LIKE '''+@initialdigit+'.'+@yearlastdigit+'.%''';
	ELSE
	SET @sql = 'SELECT @result=CAST(RIGHT('+@numberfieldname+','+CAST(@numberlength as NVARCHAR(2))+') AS INT) FROM ['+@tablename+'] WHERE '+@numberfieldname+' LIKE '''+@yearlastdigit+@monthdigit+'.%''';

	EXEC sp_executesql @sql,N'@result INT OUTPUT',@result=@result OUTPUT

	IF(ISNULL(@result,0)=0)
	SET @next=1
	ELSE
	SET @next=@result+1

	IF(@templatenumber=1)
	SET @nextnumber=@initialdigit+'.'+@yearlastdigit+'.'+RIGHT(REPLICATE('0',@numberlength)+CAST(@next AS NVARCHAR(20)),@numberlength)
	ELSE
	SET @nextnumber=@yearlastdigit+@monthdigit+'.'+RIGHT(REPLICATE('0',@numberlength)+CAST(@next AS NVARCHAR(20)),@numberlength)

	PRINT @sql
	PRINT @result
	PRINT @next
	PRINT @nextnumber

	SET @sql='INSERT INTO ['+@tablename+'] ('+@numberfieldname+') VALUES ('''+@nextnumber+''')';
	PRINT @sql
	EXEC sp_executesql @sql

	SET @no=@nextnumber
	SELECT @no AS no
END

Parameters

Usage

-- Generate autonumber template #1: ..
exec dbo.sp_create_numbering_row
@tablename='tbl_customer',
@numberfieldname='customer_number',
@numberlength=3,
@initialdigit='CUS',
@templatenumber=1

-- Generate autonumber template #2: <1DIGIT-YEAR><1DIGIT-MONTH>.
exec dbo.sp_create_numbering_row
@tablename='tbl_customer',
@numberfieldname='customer_number',
@numberlength=3,
@initialdigit='',
@templatenumber=2

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Below I will guide you to how to use it:
1. Before you get started, you need a license key for using this application which can be obtained from Microsoft after some registration.

2. After you get the license key, put it on folder:

C:\Documents and Settings\[Your username]\Application Data\Microsoft SQL Server Migration Assistant\a2ss


3. Create a new SSMA project

4. File > Add Databases, browse an access database file (mdb) you want to migrate and check mark your newly added database

5. Connect to your SQL Server

6. Choose your SQL database destination

7. Finally, click “Convert, Load, and Migrate” button, SSMA will automatically do the rest, you can see the report after finish

Note: You can also do the process one by one using buttons: “Convert Schema”, “Load to Database”, and “Migrate Data”

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