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Type:
Bug
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Status: Open (View Workflow)
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Priority:
Major
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Resolution: Unresolved
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Affects Version/s: 10.2
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Fix Version/s: 10.2
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Component/s: Optimizer - CTE
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Labels:None
Current 10.2 and 10.3 behave different on NULL
10.3
MariaDB [test]> select version();
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+----------------------+
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| version() |
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+----------------------+
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| 10.3.8-MariaDB-debug |
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+----------------------+
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1 row in set (0.000 sec)
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|
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MariaDB [test]> WITH RECURSIVE qn AS (SELECT 123 AS a UNION ALL
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-> SELECT NULL FROM qn WHERE a IS NOT NULL) SELECT * FROM qn;
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+------+
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| a |
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+------+
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| 123 |
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| NULL |
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+------+
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2 rows in set (0.002 sec)
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10.2 is producing 123, 0,0,0,0,...
MariaDB [test]> WITH RECURSIVE qn AS (SELECT 123 AS a UNION ALL
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-> SELECT NULL FROM qn WHERE a IS NOT NULL) SELECT * FROM qn;
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^CCtrl-C -- query killed. Continuing normally.
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ERROR 1317 (70100): Query execution was interrupted
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|
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MariaDB [test]> select version();
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+-----------------------+
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| version() |
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+-----------------------+
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| 10.2.16-MariaDB-debug |
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+-----------------------+
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1 row in set (0.00 sec)
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- relates to
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MDEV-15447 Import CTE tests from MySQL 8
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- Stalled
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- Closed
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