BITMAP INTERSECT_COUNT(bitmap_column, column_to_filter, filter_values) Calculate the intersection of two or more bitmaps Usage: intersect_count(bitmap_column_to_count, filter_column, filter_values ...) Example: intersect_count(user_id, event, ‘A’, ‘B’, ‘C’), meaning find the intersect count of user_id in all A/B/C 3 bitmaps
MySQL [test_query_qa]> select dt,bitmap_to_string(user_id) from pv_bitmap where dt in (3,4); +------+-----------------------------+ | dt | bitmap_to_string(`user_id`) | +------+-----------------------------+ | 4 | 1,2,3 | | 3 | 1,2,3,4,5 | +------+-----------------------------+ 2 rows in set (0.012 sec) MySQL [test_query_qa]> select intersect_count(user_id,dt,3,4) from pv_bitmap; +----------------------------------------+ | intersect_count(`user_id`, `dt`, 3, 4) | +----------------------------------------+ | 3 | +----------------------------------------+ 1 row in set (0.014 sec)
INTERSECT_COUNT,BITMAP