Copy data from one DB to second DB using Script

I would go with this template to copy data from one database to another database using scripts;

Use MyDB
GO

BEGIN TRY
	BEGIN TRANSACTION
	
	IF NOT EXISTS (SELECT  1 FROM  [dbo].[MyTable] WHERE [Id] = '801DA66B-F5F7-463E-AD56-D432E12B429E' )
	BEGIN
		Print 'INSERT / UPDATE / DELETE'
		INSERT INTO ... 
		UPDATE ....
		DELETE ....
	END

	COMMIT TRANSACTION
END TRY

BEGIN CATCH
	SELECT ERROR_NUMBER() AS ErrorNumber
	,ERROR_MESSAGE() AS ErrorMessage
	 ROLLBACK TRANSACTION
END CATCH

Basically it’s a row by row insertion where row ID is been checked for existence and operation is performed.

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