Having success with 20 million rows

[David J. Potter]

Just wanted to say that we are having success using MySql.  Even though our tables are 
large, over 20 million rows, selects, updates and inserts occur very fast.  We use 
both Windows and Linux.  Adding a column is the only action that is slow (it took 4 
days once to add a column), but that is OK since we don't change columns often.  
Overall MySql is turning to be a great fast database.
David