SQL_OPTION CTSTRING_VARCHAR
Allows VARCHAR and LVARCHAR fields to be created as CT_STRING fields for backwards compatibility. These are normally created as CT_[ 2 | 4 ]_STRING.
See also
SQL_OPTION NO_TCPIP can prevent the server from accepting TCP/IPv4 and IPv6 SQL connections, while still allowing SQL shared memory connections.
SQL_OPTION NO_SHARED_MEMORY can prevent the server from accepting SQL shared memory connections.