#coding:utf-8

"""
ID:          issue-439
ISSUE:       439
TITLE:       Expression evaluation not supported on LEFT JOIN
DESCRIPTION:
JIRA:        CORE-117
FBTEST:      bugs.core_0117
"""

import pytest
from firebird.qa import *

db = db_factory()

test_script = """
    -- Output is fine in WI-V1.5.6.5026 and all above.
    set list on;

    recreate table t1(
        id numeric( 18, 0) not null,
        id2 numeric( 18,0),
        date1 date,
        constraint pk_t1 primary key (id)
    );

    recreate table t2(
        id numeric( 18, 0) not null,
        id2 numeric( 18,0),
        date1 date,
        constraint pk_t2 primary key (id)
    );


    insert into t1(id, id2, date1) values (1, 1, '10/13/2003');
    insert into t1(id, id2, date1) values (2, 2, '09/13/2003');
    insert into t2(id, id2, date1) values (1, 1, '09/13/2003');
    commit;

    --executing the following query in isql returns the error
    --message "expression evaluation not supported" after
    --retrieving the
    --first row.


    select t_1.id2, t_1.date1 as d1, t_2.date1 as d2
    from t1 t_1
    left join t2 t_2 on t_1.id2=t_2.id2
    where
        extract(month from t_1.date1)
        <>
        extract(month from t_2.date1)
    ;

"""

act = isql_act('db', test_script)

expected_stdout = """
    ID2                             1
    D1                              2003-10-13
    D2                              2003-09-13
"""

@pytest.mark.version('>=3')
def test_1(act: Action):
    act.expected_stdout = expected_stdout
    act.execute()
    assert act.clean_stdout == act.clean_expected_stdout