firebird-qa/tests/bugs/test_core_2678.py

#coding:utf-8
#
# id:           bugs.core_2678
# title:        Full outer join cannot use available indices (very slow execution)
# decription:   
# tracker_id:   CORE-2678
# min_versions: ['3.0']
# versions:     3.0
# qmid:         None

import pytest
from firebird.qa import db_factory, isql_act, Action

# version: 3.0
# resources: None

substitutions_1 = []

init_script_1 = """"""

db_1 = db_factory(sql_dialect=3, init=init_script_1)

test_script_1 = """
    create table td_data1 (
      c1 varchar(20) character set win1251 not null collate win1251,
      c2 integer not null,
      c3 date not null,
      d1 float not null
    );
    create index idx_td_data1 on td_data1(c1,c2,c3);
    commit;
    
    create table td_data2 (
      c1 varchar(20) character set win1251 not null collate win1251,
      c2 integer not null,
      c3 date not null,
      d2 float not null
    );
    create index idx_td_data2 on td_data2(c1,c2,c3);
    commit;
    
    set planonly;
    select
        d1.c1, d2.c1,
        d1.c2, d2.c2,
        d1.c3, d2.c3,
        coalesce(sum(d1.d1), 0) t1,
        coalesce(sum(d2.d2), 0) t2
    from td_data1 d1
    full join td_data2 d2
        on
            d2.c1 = d1.c1
            and d2.c2 = d1.c2
            and d2.c3 = d1.c3
    group by
        d1.c1, d2.c1,
        d1.c2, d2.c2,
        d1.c3, d2.c3;
  """

act_1 = isql_act('db_1', test_script_1, substitutions=substitutions_1)

expected_stdout_1 = """
    PLAN SORT (JOIN (JOIN (D2 NATURAL, D1 INDEX (IDX_TD_DATA1)), JOIN (D1 NATURAL, D2 INDEX (IDX_TD_DATA2))))
  """

@pytest.mark.version('>=3.0')
def test_core_2678_1(act_1: Action):
    act_1.expected_stdout = expected_stdout_1
    act_1.execute()
    assert act_1.clean_expected_stdout == act_1.clean_stdout