Many OpenAccess SDK SQL engine API functions use column handles instead of column names. A column handle is found by calling the following functions:
dam_getCol/dam_getColW with the column name.
dam_getColByNum with the column number in the schema.
dam_getFirstCol and dam_getNextCol with the column type filter.
To write the fastest IP, the function dam_getCol/dam_getColW should be performed once and the column handles saved and reused as more rows of data are formed.
dam_getCol/dam_getColW with the column name.