[
https://issues.apache.org/jira/browse/CALCITE-2469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16583330#comment-16583330
]
pengzhiwei edited comment on CALCITE-2469 at 8/23/18 7:31 AM:
--------------------------------------------------------------
[~julianhyde] and [~vladimirsitnikov] I have changed the description to '(not
x) is null'.
And the PR is updated to [PR 796|https://github.com/apache/calcite/pull/796]
was (Author: pzw2018):
[~julianhyde] and [~vladimirsitnikov] I have change the description to '(not x)
is null'.
And the PR is updated to [PR 796|https://github.com/apache/calcite/pull/796]
> RexSimplify should not optimize '(not x) is null' to 'x is not null'
> --------------------------------------------------------------------
>
> Key: CALCITE-2469
> URL: https://issues.apache.org/jira/browse/CALCITE-2469
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.17.0
> Reporter: pengzhiwei
> Assignee: Julian Hyde
> Priority: Critical
>
> The RexSimplify will optimize the '(not x) is null' to 'x is not null'.
> However,this is incorrect.It is same to the case '(not x) is not null' .
>
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
