Function odbc_sys::SQLDescribeParam

pub unsafe extern "system" fn SQLDescribeParam(
    statement_handle: SQLHSTMT, 
    parameter_number: SQLUSMALLINT, 
    data_type_ptr: *mut SqlDataType, 
    parameter_size_ptr: *mut SQLULEN, 
    decimal_digits_ptr: *mut SQLSMALLINT, 
    nullable_ptr: *mut SQLSMALLINT
) -> SQLRETURN

Returns the description of a parameter marker associated with a prepared SQL statement. This information is also available in the fields of the IPD.

Returns

SQL_SUCCESS, SQL_SUCCESS_WITH_INFO, SQL_STILL_EXECUTING, SQL_ERROR, or SQL_INVALID_HANDLE.