ποΈ Bitmap for Count Distinct
How to use bitmaps in StarRocks for efficient COUNT(DISTINCT) calculations using the BITMAP type and bitmap functions, reducing storage space and computation time.
ποΈ Use HLL for approximate count distinct
How to use HyperLogLog (HLL) in StarRocks for approximate COUNT(DISTINCT) with ~1-10% error rate, significantly reducing memory usage for large-scale deduplication.
