i have changed a variable type from into 10 to varchar
but after few days i find it changed back to int10 without anyone intervention
other variables type in the same table which i did the change before or as it is ..
my Q here is
1.did mysql change it automatically..?any bug doing it or any of my code is doing i out?
2.is there a log to find when it changed or did the change at what time and date?