Hello,
I have a big table in my InnoDB database (more than 10 million rows)
and it contains a column of varchar(40) type. For some reason I need
to extend this column to varchar(160) but I don't expect to use the
whole capacity of this column, except for several rare cases.
My question is, after I make this "alter table" action, can it have a
negative impact on MySQL performance or required disk space? It is
just an ordinary non-indexed column, not used in where or sort by
conditions.
Thank you.
Filip Rachunek
