I have a table with a DATETIME column. I would like to SELECT this datetime value and INSERT it into another column.
I did this (note: \'2011-12-18 13:17:17\' is the
Try
UPDATE products SET former_date=20111218131717 WHERE id=1
Alternatively, you might want to look at using the STR_TO_DATE (see STR_TO_DATE(str,format)) function.