Added/Updated tests\bugs\gh_7331_test.py: Checked on 5.0.0.763 (plan did not use hash join); 5.0.0.957 (plan uses HJ).

tests/bugs/gh_7331_test.py

@@ -0,0 +1,118 @@
+#coding:utf-8
+
+"""
+ID:          issue-7331
+ISSUE:       7331
+TITLE:       Cost-based choice between nested loop join and hash join
+NOTES:
+    [20.02.2023] pzotov
+    Confirmed difference between snapshots before and after commit
+    https://github.com/FirebirdSQL/firebird/commit/99c9f63f874d74beb53d338c97c033fe7c8d71a9
+    Checked on 5.0.0.763 (plan did not use hash join); 5.0.0.957 (plan uses HJ).
+"""
+
+import pytest
+from firebird.qa import *
+
+db = db_factory()
+
+test_script = """
+    recreate table customer(
+         c_custkey int not null
+    );
+
+    recreate table orders(
+         o_orderkey int not null
+        ,o_custkey int not null
+        ,o_orderdate date
+    );
+
+    recreate table lineitem(
+         l_itemkey int not null
+        ,l_orderkey int not null
+        ,l_shipdate date
+    );
+
+
+    insert into customer(c_custkey)
+    select row_number()over() i
+    from rdb$types
+    rows 100
+    ;
+
+    insert into orders(o_orderkey, o_custkey, o_orderdate)
+    select i, c_custkey, o_orderdate
+    from (
+         select row_number()over() i, c.c_custkey, dateadd(t.i day to date '10.03.1995') o_orderdate
+         from customer c
+         cross join (select row_number()over() i from rdb$types rows 100) t
+    )
+    ;
+
+    insert into lineitem(
+         l_itemkey
+        ,l_orderkey
+        ,l_shipdate
+    )
+    select i, o_orderkey, l_shipdate
+    from (
+         select row_number()over() i, o.o_orderkey, dateadd(t.i day to date '10.03.1995') l_shipdate
+         from orders o
+         cross join (select row_number()over() i from rdb$types rows 10) t
+    )
+    ;
+    commit;
+
+    alter table customer
+        add constraint customer_custkey_pk primary key(c_custkey)
+    ;
+    alter table orders
+        add constraint orders_orderkey_pk primary key(o_orderkey)
+    ;
+    alter table orders
+        add constraint orders_custkey_fk foreign key(o_custkey) references customer
+    ;
+
+    alter table lineitem
+        add constraint lineitem_itemkey_pk primary key(l_itemkey)
+    ;
+    alter table lineitem
+        add constraint lineitem_orders_fk foreign key(l_orderkey) references orders
+    ;
+
+    create index orders_date on orders(o_orderdate);
+    create index lineitem_shipdate on lineitem(l_shipdate);
+    commit;
+
+
+    set planonly on;
+
+    select *
+    from
+       orders, lineitem
+    where
+       l_orderkey = o_orderkey
+       and l_shipdate between date '1995-03-15' and date '2000-03-15';
+
+    select *
+    from
+       customer, orders, lineitem
+    where
+       c_custkey = o_custkey
+       and l_orderkey = o_orderkey
+       and l_shipdate between date '1995-03-15' and date '2000-03-15';
+
+"""
+
+act = isql_act('db', test_script)
+
+expected_stdout = """
+    PLAN HASH (LINEITEM INDEX (LINEITEM_SHIPDATE), ORDERS NATURAL)
+    PLAN HASH (LINEITEM INDEX (LINEITEM_SHIPDATE), JOIN (CUSTOMER NATURAL, ORDERS INDEX (ORDERS_CUSTKEY_FK)))
+"""
+
+@pytest.mark.version('>=3.0')
+def test_1(act: Action):
+    act.expected_stdout = expected_stdout
+    act.execute(combine_output = True)
+    assert act.clean_stdout == act.clean_expected_stdout