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https://issues.apache.org/jira/browse/DERBY-3257?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12560503#action_12560503
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A B commented on DERBY-3257:
----------------------------
Just noticed that the code which is failing with 42X24 was added as part of
DERBY-681. The corresponding comments in that issue:
<begin>
Basically I want to ensure that there are no column references in the
havingClause as the same nesting level as this query. I think the comments with
the code are adequate explanation. A new SQLCode is used for this error.
Since error checking depends on nestingLevel I had to fix up code to make sure
that it was set correctly in various places.
<end>
Not sure if this is relevant or not, but I thought I'd mention it since I was
thinking the error was in code that had been around since before DERBY-681...
> SELECT with HAVING clause containing OR conditional incorrectly return 1 row
> - should return 2 rows - works correctly with 10.2 DB
> ----------------------------------------------------------------------------------------------------------------------------------
>
> Key: DERBY-3257
> URL: https://issues.apache.org/jira/browse/DERBY-3257
> Project: Derby
> Issue Type: Bug
> Components: SQL
> Affects Versions: 10.3.1.4, 10.3.2.1, 10.4.0.0
> Reporter: Stan Bradbury
> Assignee: Kathey Marsden
> Attachments: 42X24_error.sql, d3257_doNOTCommit.patch,
> derby-3257_plan_10.2.txt, derby-3257_plan_10.4.txt, TestHaving.java
>
>
> Attached program demonstrates the problem. Only one count is returned
> (matching CODE= GBR) - the count of CODE=CHA is not returned. Works fine
> with versions 10.1 and 10.2 or if program is run using 10.3 jars and 10.2
> database (soft upgrade).
> Query:
> SELECT COUNT(t0.ID) FROM CTS1.TEST_TABLE t0
> GROUP BY t0.CODE
> HAVING (t0.CODE = 'GBR' OR t0.CODE = 'CHA') AND t0.CODE IS NOT NULL
> Incorrect results (see last line):
> Database product: Apache Derby
> Database version: 10.3.1.5 - (579866)
> Driver name: Apache Derby Embedded JDBC Driver
> Driver version: 10.3.1.5 - (579866)
> result: 2
> Correct results:
> Database product: Apache Derby
> Database version: 10.2.2.0 - (485682)
> Driver name: Apache Derby Embedded JDBC Driver
> Driver version: 10.2.2.0 - (485682)
> result: 4
> result: 2
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