db_guy的博客

1.创建一张测试表drop table if exists default.test_tab purge;create table default.test_tabasselect date_add(current_timestamp(),-10) as event_time,'1' as id, 'A' as a,'B' as b,'C' as cunion all select date_add(current_timestamp(),-9) as event_time,'1' as id,