Pivotal Entry-based Method Smallest Pivotal Entry First 0123456 s r a i t Po:(1,1) 0 01234 sera 56 2/2/2021 Topk Search(@ ICD E2013Pivotal Entry-based Method 2/2/2021 TopkSearch @ ICDE2013 28/42 Smallest Pivotal Entry First. P0 : (1,1)