Data update

Task/Hash-join/DuckDB/hash-join.duckdb

@@ -0,0 +1,21 @@
+create or replace table people (age decimal(3), name varchar(30));
+insert into people (age, name)
+  select 27, 'Jonah'   union all
+  select 18, 'Alan'    union all
+  select 28, 'Glory'   union all
+  select 18, 'Popeye'  union all
+  select 28, 'Alan'
+;
+
+create or replace table nemeses (name varchar(30), nemesis varchar(30));
+insert into nemeses (name, nemesis)
+  select 'Jonah', 'Whales'   union all
+  select 'Jonah', 'Spiders'  union all
+  select 'Alan' , 'Ghosts'   union all
+  select 'Alan' , 'Zombies'  union all
+  select 'Glory', 'Buffy'
+;
+
+select * from people join nemeses using(name);
+
+explain select * from people join nemeses using(name);