https://userapps.support.sap.com/sap/support/knowledge/en/2094956
2094956 - ODBC: SQLDescribeParam throws errors such as The untyped variable ? is allowed only in in...
Some queries (INSERT in this case) are sent to ASE as dynamic SQL and return an error: [SAP][ASE ODBC Driver][Adaptive Server Enterprise]The untyped variable ?...