Question

Hi i m using SQL 2008 R2.What is the faster way to insert data of 10 mil. records from one table A into another empty table B.
Table A and B dont have same schema similar but not the same.

Answer 1

It’s only 10 million rows. Just use a normal INSERT

INSERT tableB (col1, col2, col3, ...)
SELECT col1, col2, col3, ... FROM tableA

or

--assumes no table b already
SELECT col1, col2, col3, ..., INTO TableB FROM tableA
.. now add some columns etc