mirror of
https://github.com/FirebirdSQL/firebird-qa.git
synced 2025-01-23 14:03:06 +01:00
56 lines
1.4 KiB
Python
56 lines
1.4 KiB
Python
|
#coding:utf-8
|
||
|
|
|
||
|
|
"""
|
||
|
|
ID: issue-3357
|
||
|
|
ISSUE: https://github.com/FirebirdSQL/firebird/issues/3357
|
||
|
|
TITLE: Bad execution plan if some stream depends on multiple streams via a function [CORE2975]
|
||
|
|
NOTES:
|
||
|
|
[01.03.2023] pzotov
|
||
|
|
::: NB :::
|
||
|
|
Plan that was described in the ticked as expected (see starting issue, dated in 2010) currently
|
||
|
|
can be seen only fin FB 3.x and 4.x.
|
||
|
|
As of FB 5.x, its plan contains two-step HASH JOIN.
|
||
|
|
|
||
|
|
Checked on 3.0.11.33665, 4.0.3.2904, 5.0.0.964
|
||
|
|
"""
|
||
|
|
|
||
|
|
import pytest
|
||
|
|
from firebird.qa import *
|
||
|
|
|
||
|
|
db = db_factory()
|
||
|
|
|
||
|
|
test_script = """
|
||
|
|
create table T1 (ID int, COL int);
|
||
|
|
create index T1_ID on T1 (ID);
|
||
|
|
create unique index T1_COL on T1 (COL);
|
||
|
|
|
||
|
|
create table T2 (ID int);
|
||
|
|
create index T2_ID on T2 (ID);
|
||
|
|
|
||
|
|
create table T3 (ID int);
|
||
|
|
create index T3_ID on T3 (ID);
|
||
|
|
|
||
|
|
set plan;
|
||
|
|
select *
|
||
|
|
from T1
|
||
|
|
join T2 on T2.ID = T1.ID
|
||
|
|
join T3 on T3.ID = coalesce(T1.ID, T2.ID)
|
||
|
|
where T1.COL = 1;
|
||
|
|
"""
|
||
|
|
|
||
|
|
act = isql_act('db', test_script)
|
||
|
|
|
||
|
|
fb4x_expected_stdout = """
|
||
|
|
PLAN JOIN (T1 INDEX (T1_COL), T2 INDEX (T2_ID), T3 INDEX (T3_ID))
|
||
|
|
"""
|
||
|
|
|
||
|
|
fb5x_expected_stdout = """
|
||
|
|
PLAN HASH (HASH (T1 INDEX (T1_COL), T2 NATURAL), T3 NATURAL)
|
||
|
|
"""
|
||
|
|
|
||
|
|
@pytest.mark.version('>=3.0.9')
|
||
|
|
def test_1(act: Action):
|
||
|
|
act.expected_stdout = fb4x_expected_stdout if act.is_version('<5') else fb5x_expected_stdout
|
||
|
|
act.execute(combine_output = True)
|
||
|
|
assert act.clean_stdout == act.clean_expected_stdout
|