SQLDescribeParam

Retrieves information about prepared parameters.

SQLNumParams

Retrieves the number of parameters in an SQL statement.

SQLSetStmtAttr

SQLSetConnectAttr

SQLGetStmtAttr

These functions set or retrieve statement options, such as asynchronous processing, orientation for binding rowsets, maximum amount of variable length data to return, maximum number of resultset rows to return, and query timeout value. Note that SQLSetConnectAttr sets options for all statements in a connection.