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84 lines
2.4 KiB
Python
84 lines
2.4 KiB
Python
#coding:utf-8
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#
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# id: bugs.core_5481
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# title: Available indices are not used in some cases if ORDER BY expression is a filtered one
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# decription:
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# Confirmed bug on WI-V3.0.1.32609:
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# 1. Plan when FK did present was ineffective: PLAN (V_TEST B ORDER BALANCES_BALANCEDATE_DESC)
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# 2. Effective plan was in use only after dropping FK.
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# Checked on: 3.0.5.33084, 4.0.0.1340 - works fine.
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#
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# tracker_id: CORE-5481
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# min_versions: ['3.0.4']
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# versions: 3.0.4
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# qmid: None
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import pytest
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from firebird.qa import db_factory, isql_act, Action
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# version: 3.0.4
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# resources: None
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substitutions_1 = []
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init_script_1 = """"""
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db_1 = db_factory(sql_dialect=3, init=init_script_1)
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test_script_1 = """
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recreate view v_test as select 1 x from rdb$database;
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commit;
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recreate table balances
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(
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balanceid bigint not null,
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orgaccountid bigint not null,
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balancedate date not null
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);
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recreate table org_accounts
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(
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orgaccountid bigint not null primary key
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);
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alter table balances add constraint pk_balances primary key (balanceid);
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alter table balances add constraint fk_balances_orgaccounts foreign key (orgaccountid) references org_accounts (orgaccountid);
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alter table balances add constraint balances_balancedate_orgaccount unique (orgaccountid, balancedate);
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create descending index balances_balancedate_desc on balances (balancedate);
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recreate view v_test as
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select b.*
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from balances b
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where
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orgaccountid=18 and
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balancedate<='01.01.2017'
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order by balancedate desc
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rows 1
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;
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commit;
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set plan on;
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select * from v_test;
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commit;
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ALTER TABLE BALANCES DROP CONSTRAINT BALANCES_BALANCEDATE_ORGACCOUNT;
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commit;
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select * from v_test; -- plan here should remains the same!
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commit;
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"""
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act_1 = isql_act('db_1', test_script_1, substitutions=substitutions_1)
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expected_stdout_1 = """
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PLAN (V_TEST B ORDER BALANCES_BALANCEDATE_DESC INDEX (FK_BALANCES_ORGACCOUNTS))
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PLAN (V_TEST B ORDER BALANCES_BALANCEDATE_DESC INDEX (FK_BALANCES_ORGACCOUNTS))
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"""
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@pytest.mark.version('>=3.0.4')
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def test_1(act_1: Action):
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act_1.expected_stdout = expected_stdout_1
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act_1.execute()
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assert act_1.clean_expected_stdout == act_1.clean_stdout
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