not sure if cluster by has an positive effect on q28. replace with sampling order by?
not sure if cluster by has an positive effect on q28. replace with sampling order by?

intel-hadoop/Big-Data-Benchmark-for-Big-Bench,philjjoon/Big-Data-Benchmark-for-Big-Bench,XiaominZhang/Big-Data-Benchmark-for-Big-Bench,philjjoon/Big-Data-Benchmark-for-Big-Bench,XiaominZhang/Big-Data-Benchmark-for-Big-Bench,intel-hadoop/Big-Data-Benchmark-for-Big-Bench