use custom query for H2 when retrieving column information
use custom query for H2 when retrieving column
information

 * handles composite keys

 * returns only "public" schema which handles
   the fact dbinfo under H2 will mix system
   tables and user defined table information
   (an example is having a table called "users"
   in your database)

cfwheels/cfwheels,cfwheels/cfwheels,cfwheels/cfwheels