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70 lines
1.5 KiB
Python
70 lines
1.5 KiB
Python
#coding:utf-8
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"""
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ID: issue-5933
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ISSUE: 5933
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TITLE: Regression in 3.0+: message CTE 'X' has cyclic dependencies appear when 'X'
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is alias for resultset and there is previous CTE part with the same name 'X' in the query
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DESCRIPTION:
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JIRA: CORE-5667
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FBTEST: bugs.core_5667
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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 = """
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set list on;
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with
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x as(
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select 1 i from rdb$database
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)
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,y as(
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select i from x
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)
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select * from y as x ------------------ NOTE: "as X", i.e. alias for final CTE part ( "y" ) matches to 1st CTE ( "x" )
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;
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-- Additional sample:
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with recursive
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a as(
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select 0 a from rdb$database
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union all
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select a+1 from a where a.a < 1
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)
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,b as(
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select a b from a b
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)
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,c as(
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select b c from b c
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)
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select c a from c a
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;
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-- Two samples from CORE-5655:
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with cte as (select sign(t.rdb$relation_id) ct from rdb$database t) select ct.ct from cte ct;
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select e.ct from (select d.ct from (select sign(t.rdb$relation_id) ct from rdb$database t) d) e;
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"""
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act = isql_act('db', test_script)
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expected_stdout = """
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I 1
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A 0
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A 1
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CT 1
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CT 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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