[jira] [Commented] (DERBY-6577) Quantified comparison returns wrong result in CASE and COALESCE expressions

["Knut Anders Hatlen (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/DERBY-6577?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13997591#comment-13997591 ] 

Knut Anders Hatlen commented on DERBY-6577:
-------------------------------------------

Also affects the IN and BETWEEN operators on 10.10.2.0:

{noformat}
ij> select c, true in ((c = all (values 'Y'))) from (values 'Y', 'N') v(c);
C|2    
-------
Y|NULL 
N|true 

2 rows selected
ij> select c, true between false and (c = all (values 'Y')) from (values 'Y', 'N') v(c);
C|2    
-------
Y|NULL 
N|true 

2 rows selected
{noformat}

Both of these queries should have returned (Y, true), (N, false).

> Quantified comparison returns wrong result in CASE and COALESCE expressions
> ---------------------------------------------------------------------------
>
>                 Key: DERBY-6577
>                 URL: https://issues.apache.org/jira/browse/DERBY-6577
>             Project: Derby
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 10.11.0.0, 10.10.2.0
>            Reporter: Knut Anders Hatlen
>            Assignee: Knut Anders Hatlen
>
> I'm seeing this on head of trunk:
> {noformat}
> ij> select c, c = all (values 'Y'), case when c = all (values 'Y') then true else false end from (values 'Y', 'N') v(c);
> C|2    |3    
> -------------
> Y|true |false
> N|false|true 
> 2 rows selected
> {noformat}
> Column 2 and column 3 should have the same value, but something seems to go wrong when the quantified comparison is used in a CASE expression.
> I'm seeing the expected result on 10.10.2.0, though:
> {noformat}
> ij> select c, c = all (values 'Y'), case when c = all (values 'Y') then true else false end from (values 'Y', 'N') v(c);
> C|2    |3    
> -------------
> Y|true |true 
> N|false|false
> 2 rows selected
> {noformat}



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