Errata for "Lightning Fast and Space Efficient Inequality Joins" (PVLDB 8(13): 2074-2085).

This is in response to recent feedback from some readers, which requires some clarifications regarding our IEJoin algorithm published in [1]. The feedback revolves around four points: (1) a typo in our illustrating example of the join process; (2) a naming error for the index used by our algorithm to improve the bit array scan; (3) the sort order used in our algorithms; and (4) a missing explanation on how duplicates are handled by our self join algorithm.