sql - How to use OUTPUT to capture new and old ID?

Question

For example let say I have,

    create table product
    (
      ID INT IDENTITY(1,1) NOT NULL,
      Name VARCHAR(10)
    )

    insert into product(Name) values('a')
    insert into product(Name) values('b')
    insert into product(Name) values('c')
    insert into product(Name) values('d')
    insert into product(Name) values('e')

    create table #tempproduct
    (
      ID INT IDENTITY(1,1) NOT NULL,
      Name VARCHAR(10)
    )

    declare @OutputAttributesValues table
    (
      [NewID] INT, 
      [OldID] INT
    )

    insert into #tempproduct(Name)
    OUTPUT INSERTED.[ID],[ID] INTO @OutputAttributesValues
    select [Name] FROM product

See I need to get both Old and new ID from output. But this sql giving me error "Invalid column name 'ID'." http://sqlfiddle.com/#!3/a27b2/1

Answer 1

You can't use traditional INSERT to output non-inserted fields. Use merge instead (caveat: only works with database compatibility >= 100):

MERGE
  #tempproduct AS t
USING(
  SELECT
      Name
      , ID
  FROM
    product) AS s
ON (1=0)  

WHEN NOT MATCHED   
  THEN INSERT (Name) VALUES (Name)
OUTPUT inserted.ID, s.ID INTO @OutputAttributesValues;

SELECT * FROM @OutputAttributesValues