Problems about ODBC3 datetime

Hi,
Firstly, I encountered a problem when using SQL_DATE: when I use SQLGetTypeInfo(...,SQL_DATE);
the API returns no record. I debuged the psqlodbc driver and found that the value of the parameter DataType was 91. So I think that the value was changed by the odbc30 Driver Manager. But why don't the psqlodbc add the SQL_TYPE_DATE and other ODBC30 data types support in the array sqlTypes[](in pgtypes.c)?
Secondly, I wander why returning SQL_DATETIME in function pgtype_to_sqldesctype for the three types--SQL_TYPE_DATE, SQL_TYPE_TIME, SQL_TYPE_TIMESTAMP?
Thanks!!!

　　　　　　　　Han
　　　　　　　　zhouhanok(at)vip(dot)sina(dot)com
　　　　　　　　　　2002-11-21