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126 lines
4.9 KiB
Python
126 lines
4.9 KiB
Python
#coding:utf-8
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"""
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ID: optimizer.full-join-04
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TITLE: FULL OUTER JOIN, list all values, but filtered in WHERE clause
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DESCRIPTION:
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TableX FULL OUTER JOIN TableY with relation in the ON clause.
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Three tables are used, where 1 table (RC) holds references to the two other tables (R and C).
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The two tables R and C contain both 1 value that isn't inside RC.
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=====
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NB: 'UNION ALL' is used here, so PLAN for 2.5 will be of TWO separate rows.
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FBTEST: functional.arno.optimizer.opt_full_join_04
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NOTES:
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[01.08.2023] pzotov
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Adjusted plan to actual for FB 5.x after letter from dimitr.
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"""
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import pytest
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from firebird.qa import *
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init_script = """
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create table relations (
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relationid integer,
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relationname varchar(35)
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);
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create table categories (
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categoryid integer,
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description varchar(20)
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);
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create table relationcategories (
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relationid integer,
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categoryid integer
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);
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commit;
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insert into relations (relationid, relationname) values (1, 'diving snorkel shop');
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insert into relations (relationid, relationname) values (2, 'bakery garbage');
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insert into relations (relationid, relationname) values (3, 'racing turtle');
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insert into relations (relationid, relationname) values (4, 'folding air-hook shop');
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insert into categories (categoryid, description) values (1, 'relation');
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insert into categories (categoryid, description) values (2, 'debtor');
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insert into categories (categoryid, description) values (3, 'creditor');
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insert into categories (categoryid, description) values (4, 'newsletter');
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insert into relationcategories (relationid, categoryid) values (1, 1);
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insert into relationcategories (relationid, categoryid) values (2, 1);
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insert into relationcategories (relationid, categoryid) values (3, 1);
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insert into relationcategories (relationid, categoryid) values (1, 2);
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insert into relationcategories (relationid, categoryid) values (2, 2);
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insert into relationcategories (relationid, categoryid) values (1, 3);
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commit;
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-- normally these indexes are created by the primary/foreign keys,
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-- but we don't want to rely on them for this test
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create unique asc index pk_relations on relations (relationid);
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create unique asc index pk_categories on categories (categoryid);
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create unique asc index pk_relationcategories on relationcategories (relationid, categoryid);
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create asc index fk_rc_relations on relationcategories (relationid);
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create asc index fk_rc_categories on relationcategories (categoryid);
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commit;
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"""
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db = db_factory(init=init_script)
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test_script = """
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set plan on;
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set list on;
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select
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r.relationname,
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rc.relationid,
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rc.categoryid,
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c.description
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from
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relations r
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full join relationcategories rc on (rc.relationid = r.relationid)
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full join categories c on (c.categoryid = rc.categoryid)
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where
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rc.categoryid is null and c.categoryid >= 1
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UNION ALL --- ::::::: U N I O N A L L :::::::
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select
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r.relationname,
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rc.relationid,
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rc.categoryid,
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c.description
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from
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relations r
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full join relationcategories rc on (rc.relationid = r.relationid)
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full join categories c on (c.categoryid = rc.categoryid)
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where
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rc.relationid is null and r.relationid >= 1;
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"""
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act = isql_act('db', test_script)
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@pytest.mark.version('>=3.0')
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def test_1(act: Action):
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fb3x_plan = "PLAN (JOIN (JOIN (C INDEX (PK_CATEGORIES), JOIN (JOIN (RC NATURAL, R INDEX (PK_RELATIONS)), JOIN (R NATURAL, RC INDEX (FK_RC_RELATIONS)))), JOIN (JOIN (JOIN (RC NATURAL, R INDEX (PK_RELATIONS)), JOIN (R NATURAL, RC INDEX (FK_RC_RELATIONS))), C INDEX (PK_CATEGORIES))), JOIN (JOIN (C NATURAL, JOIN (JOIN (RC NATURAL, R INDEX (PK_RELATIONS)), JOIN (R INDEX (PK_RELATIONS), RC INDEX (FK_RC_RELATIONS)))), JOIN (JOIN (JOIN (RC NATURAL, R INDEX (PK_RELATIONS)), JOIN (R INDEX (PK_RELATIONS), RC INDEX (FK_RC_RELATIONS))), C NATURAL)))"
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fb5x_plan = "PLAN (JOIN (C INDEX (PK_CATEGORIES), JOIN (JOIN (RC INDEX (FK_RC_CATEGORIES), R INDEX (PK_RELATIONS)), JOIN (R NATURAL, RC INDEX (PK_RELATIONCATEGORIES)))), JOIN (JOIN (R INDEX (PK_RELATIONS), RC INDEX (FK_RC_RELATIONS)), C INDEX (PK_CATEGORIES)))"
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expected_plan = fb3x_plan if act.is_version('<5') else fb5x_plan
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expected_stdout = f"""
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{expected_plan}
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RELATIONNAME <null>
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RELATIONID <null>
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CATEGORYID <null>
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DESCRIPTION newsletter
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RELATIONNAME folding air-hook shop
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RELATIONID <null>
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CATEGORYID <null>
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DESCRIPTION <null>
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"""
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act.expected_stdout = expected_stdout
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act.execute(combine_output = True)
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assert act.clean_stdout == act.clean_expected_stdout
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