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60 lines
1.8 KiB
Python
60 lines
1.8 KiB
Python
#coding:utf-8
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"""
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ID: issue-1807
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ISSUE: 1807
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TITLE: Indexed MIN/MAX aggregates produce three index reads instead of the expected one indexed read
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DESCRIPTION:
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JIRA: CORE-1389
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FBTEST: bugs.core_1389
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"""
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import pytest
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from firebird.qa import *
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from firebird.driver import DbInfoCode
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init_script = """
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recreate table test(x int, y int);
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commit;
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insert into test(x, y)
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select -1, 1 from (select 1 i from rdb$types rows 200) a, (select 1 i from rdb$types rows 200) b;
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commit;
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create index test_x on test(x);
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create descending index test_y on test(y);
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commit;
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"""
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db = db_factory(init=init_script)
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act = python_act('db')
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expected_stdout = """Number of indexed reads: 1
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Number of indexed reads: 1
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Number of indexed reads: 1
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Number of indexed reads: 1
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"""
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@pytest.mark.version('>=3')
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def test_1(act: Action, capsys):
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with act.db.connect() as con:
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c = con.cursor()
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c.execute("select rdb$relation_id from rdb$relations where trim(rdb$relation_name)=upper('test')")
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test_rel = c.fetchone()[0]
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#
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sql_set=['select min(x) from test',
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'select x from test order by x rows 1',
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'select max(y) from test',
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'select y from test order by y desc rows 1']
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previous_idx_counter = 0
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for cmd in sql_set:
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c.execute(cmd).fetchone()
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counts = con.info.get_info(DbInfoCode.READ_IDX_COUNT)
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for k, cumulative_idx_counter in counts.items():
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if k == test_rel:
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print('Number of indexed reads:', cumulative_idx_counter - previous_idx_counter)
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previous_idx_counter = cumulative_idx_counter
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#
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output = capsys.readouterr()
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assert output.out == expected_stdout
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