ok. Now I really found a small bug. this works as intended: BEGIN; CREATE INCREMENTAL MATERIALIZED VIEW test_ivm AS SELECT i, MIN(j) as min_j FROM mv_base_a group by 1; INSERT INTO mv_base_a select 1,-2 where false; rollback;
however the following one: BEGIN; CREATE INCREMENTAL MATERIALIZED VIEW test_ivm1 AS SELECT MIN(j) as min_j FROM mv_base_a; INSERT INTO mv_base_a select 1, -2 where false; rollback; will evaluate tuplestore_tuple_count(new_tuplestores) to 1, it will walk through IVM_immediate_maintenance function to apply_delta. but should it be zero?
