作为一个数据库小白，原来有这么多种的index啊：
Storage Index Aggregate Index Bitmap Index 覆盖索引(Covering Index)/Materialized View
BloomFilter
Statistics
https://snippetessay.wordpress.com/2015/07/25/hive-optimizations-with-indexes-bloom-filters-and-statistics/
作为一个数据库小白，原来有这么多种的index啊：
Storage Index Aggregate Index Bitmap Index 覆盖索引(Covering Index)/Materialized View
BloomFilter
Statistics
https://snippetessay.wordpress.com/2015/07/25/hive-optimizations-with-indexes-bloom-filters-and-statistics/
