Question

I’ve got lets say the next table

A B C 1

D E F 1

G H I 1

I want to append to this table the same records but with the 3rd column having the value 2.
like this:

A B C 1

D E F 1

G H I 1

A B C 2

D E F 2

G H I 2

Can someone help me with the sql query?

Answer 1

INSERT INTO <table> (col1, col2, col3, col4)
SELECT col1, col2, col3, 2 AS col4
FROM <table>