ALTER COLUMN datatype with indexed one

Question

Is there a way I can change a column data type without dropping the index.

With disabling option it can't 'ALTER INDEX ALL ON ' + @tablename + ' DISABLE '

Answer 1

Logically speaking this should not be possible. You are changing the underlying data type, so reindexing has to happen.

So if you have a number column and you change it varchar then database will have to rearrange things which implies index will have to be recreated.