GitHub

After changing function AVG() to SUM()/COUNT(),the same logical SQL queries returns an unexpected empty set

INSERT INTO users (id, name, email, age, created_at, sex) VALUES (7042, 'sample_840', '[email protected]', 17, '2025-01-06', 'boy'); INSERT INTO users (id, name ...
IEEE

Efficiently Answering Top-k Window Aggregate Queries: Calculating Coverage Number Sequences over Hierarchical Structures

Abstract: Given a set of spatio-temporal objects, a top-k window aggregate query reports top-k tuples that are ordered with respect to the number of objects during a given time interval and within a ...