Getting column handles

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 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 should be performed once and the column handles saved and reused as more rows of data are formed.