sth->do()

[Loo, Peter # PHX]

Hi All,
 
I need to issue commands such as ("CREATE TABLE", "DROP TABLE", "ALTER
TABLE", etc...), however, whenever I use sth->do($sqlString), I get an
error.  I understand that using sth->do(), it goes through the process
of prepare and execute.  With that, it is expecting a returned value.
 
Can someone advise as to the best way to execute commands that does not
require return values?
 
Thanks.
 
Peter