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https://issues.apache.org/jira/browse/FLINK-21613?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17324105#comment-17324105
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Flink Jira Bot commented on FLINK-21613:
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This issue is assigned but has not received an update in 7 days so it has been
labeled "stale-assigned". If you are still working on the issue, please give an
update and remove the label. If you are no longer working on the issue, please
unassign so someone else may work on it. In 7 days the issue will be
automatically unassigned.
> Parse Compute Column with `IN` expression throws NPE
> ----------------------------------------------------
>
> Key: FLINK-21613
> URL: https://issues.apache.org/jira/browse/FLINK-21613
> Project: Flink
> Issue Type: Bug
> Components: Table SQL / API
> Affects Versions: 1.13.0
> Reporter: Shuo Cheng
> Assignee: Shuo Cheng
> Priority: Major
> Labels: stale-assigned
> Fix For: 1.13.0
>
>
> Considering the following given sql:
> {code:sql}
> CREATE TABLE MyInputFormatTable (
> `a` INT,
> `b` BIGINT,
> `c` STRING,
> `d` as `c` IN ('Hi', 'Hello')
> ) WITH (
> 'connector' = 'values',
> 'data-id' = '$dataId',
> 'runtime-source' = 'InputFormat'
> )
> {code}
> NPE will be thrown during parsing the sql:
> `select * from MyInputFormatTable`
> It seems it's the commit "[hotfix][table-planner-blink] Simplify SQL
> expression to RexNode conversion" which introduces this problem. This hotfix
> uses a method `SqlToRelConverter#convertExpression` and this method does not
> has any tests and is not used in Calcite anywhere, which is unsafe. Maybe
> reverting the hotfix is a good choice.
> CC [~twalthr]
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