Stata fixed how they will talk to the MonetDB driver in the future, but they say the MonetDB driver is less standard, so perhaps we should be aware of this:

We were passing a NULL string to the ODBC
api call SQLTables and SQLColumns where the MonetDB driver wants an empty string
("").  Some other drivers need a NULL string passed in to work (Oracle being
one) so I believe this is a driver bug, but I have patched the problem in Stata.
I have added code in -odbc- to check for the MonetDB driver and pass an empty
string in that case.