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44 lines
1.1 KiB
Python
44 lines
1.1 KiB
Python
#coding:utf-8
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"""
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ID: issue-4238
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ISSUE: 4238
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TITLE: Derived fields may not be optimized via an index
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DESCRIPTION:
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JIRA: CORE-3902
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FBTEST: bugs.core_3902
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"""
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import pytest
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from firebird.qa import *
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db = db_factory()
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test_script = """SET PLANONLY;
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select rdb$database.rdb$relation_id from rdb$database
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left outer join
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( select rdb$relations.rdb$relation_id as tempid
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from rdb$relations ) temp (tempid)
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on temp.tempid = rdb$database.rdb$relation_id;
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select rdb$database.rdb$relation_id from rdb$database
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left outer join
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( select rdb$relations.rdb$relation_id
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from rdb$relations ) temp
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on temp.rdb$relation_id = rdb$database.rdb$relation_id;
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"""
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act = isql_act('db', test_script)
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expected_stdout = """
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PLAN JOIN (RDB$DATABASE NATURAL, TEMP RDB$RELATIONS INDEX (RDB$INDEX_1))
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PLAN JOIN (RDB$DATABASE NATURAL, TEMP RDB$RELATIONS INDEX (RDB$INDEX_1))
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"""
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@pytest.mark.version('>=3')
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def test_1(act: Action):
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act.expected_stdout = expected_stdout
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act.execute()
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assert act.clean_stdout == act.clean_expected_stdout
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