mirror of
https://github.com/FirebirdSQL/firebird-qa.git
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113 lines
2.3 KiB
Python
113 lines
2.3 KiB
Python
#coding:utf-8
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"""
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ID: optimizer.mixed-joins-02
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TITLE: Mixed JOINS
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DESCRIPTION:
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Tables without indexes should be merged (when inner join) and those who can use a index, should use it.
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FBTEST: functional.arno.optimizer.opt_mixed_joins_02
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NOTES:
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[08.04.2022] pzotov
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FB 5.0.0.455 and later: data source with greatest cardinality will be specified at left-most position
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in the plan when HASH JOIN is choosen. Because of this, two cases of expected stdout must be taken
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in account, see variables 'fb3x_checked_stdout' and 'fb5x_checked_stdout'.
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See letter from dimitr, 05.04.2022 17:38.
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"""
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import pytest
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from firebird.qa import *
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init_script = """CREATE TABLE Table_10 (
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ID INTEGER NOT NULL
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);
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CREATE TABLE Table_100 (
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ID INTEGER NOT NULL
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);
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CREATE TABLE Table_1000 (
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ID INTEGER NOT NULL
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);
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SET TERM ^^ ;
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CREATE PROCEDURE PR_FillTable_10
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AS
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DECLARE VARIABLE FillID INTEGER;
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BEGIN
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FillID = 1;
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WHILE (FillID <= 10) DO
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BEGIN
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INSERT INTO Table_10 (ID) VALUES (:FillID);
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FillID = FillID + 1;
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END
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END
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^^
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CREATE PROCEDURE PR_FillTable_100
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AS
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DECLARE VARIABLE FillID INTEGER;
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BEGIN
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FillID = 1;
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WHILE (FillID <= 100) DO
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BEGIN
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INSERT INTO Table_100 (ID) VALUES (:FillID);
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FillID = FillID + 1;
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END
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END
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^^
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CREATE PROCEDURE PR_FillTable_1000
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AS
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DECLARE VARIABLE FillID INTEGER;
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BEGIN
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FillID = 1;
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WHILE (FillID <= 1000) DO
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BEGIN
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INSERT INTO Table_1000 (ID) VALUES (:FillID);
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FillID = FillID + 1;
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END
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END
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^^
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SET TERM ; ^^
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COMMIT;
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EXECUTE PROCEDURE PR_FillTable_10;
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EXECUTE PROCEDURE PR_FillTable_100;
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EXECUTE PROCEDURE PR_FillTable_1000;
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COMMIT;
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CREATE UNIQUE ASC INDEX PK_Table_100 ON Table_100 (ID);
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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 planonly;
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select count(*)
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from table_1000 t1000
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left join table_100 t100 on (t100.id = t1000.id)
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join table_10 t10 on (t10.id = t100.id);
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"""
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act = isql_act('db', test_script)
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fb3x_checked_stdout = """
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PLAN HASH (T10 NATURAL, JOIN (T1000 NATURAL, T100 INDEX (PK_TABLE_100)))
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"""
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fb5x_checked_stdout = """
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PLAN HASH (JOIN (T1000 NATURAL, T100 INDEX (PK_TABLE_100)), T10 NATURAL)
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"""
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@pytest.mark.version('>=3.0')
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def test_1(act: Action):
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act.expected_stdout = fb3x_checked_stdout if act.is_version('<5') else fb5x_checked_stdout
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act.execute()
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assert act.clean_stdout == act.clean_expected_stdout
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