i have table like
serial no col1 col2 col3
---------------------------------------------
1 x1 x2 x3
2 y1 y2 y3
Now i want to insert this date into a different table like
sel no col1
------------------
1 x1
1 x2
1 x3
2 y1
2 y2
2 y3
How can i do this with a program