[jira] [Updated] (FLINK-13509) Support `is not distinct from ` and similar syntax in LookupJoin

["Jing Zhang (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FLINK-13509?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jing Zhang updated FLINK-13509:
-------------------------------
    Description: 
Example1:
{code:java}
`SELECT T.id, T.len, T.content, D.name FROM T JOIN userTable for system_time as of T.proctime AS D ON T.id = D.id OR (T.id is null and D.id is null)`
{code}

Example2:
{code:java}
"SELECT T.id, T.len, T.content, D.name FROM T JOIN userTable for system_time as of T.proctime AS D ON T.id IS NOT  DISTINCT FROM  D.id"
{code}

Now run the above sql in Blink planner, the results are not expected.Because LookupJoin does not handle the case correctly.

Here is plan:
In 1.9 version, simply throw exception in compile phase for the above sql.
Support the feature in 1.10 version.


  was:
Example1:
{code:java}
`SELECT T.id, T.len, T.content, D.name FROM T JOIN userTable for system_time as of T.proctime AS D ON T.id = D.id OR (T.id is null and D.id is null)`
{code}

Example2:
{code:java}
"SELECT T.id, T.len, T.content, D.name FROM T JOIN userTable for system_time as of T.proctime AS D ON T.id IS NOT  DISTINCT FROM  D.id"
{code}

Now run the above sql in Blink planner, the results are error.Because LookupJoin does not handle the case correctly.

Here is plan:
In 1.9 version, simply throw exception in compile phase for the above sql.
Support the feature in 1.10 version.



> Support `is not distinct from ` and similar syntax in LookupJoin
> ----------------------------------------------------------------
>
>                 Key: FLINK-13509
>                 URL: https://issues.apache.org/jira/browse/FLINK-13509
>             Project: Flink
>          Issue Type: Task
>          Components: Table SQL / Planner
>    Affects Versions: 1.10.0
>            Reporter: Jing Zhang
>            Priority: Minor
>             Fix For: 1.10.0
>
>
> Example1:
> {code:java}
> `SELECT T.id, T.len, T.content, D.name FROM T JOIN userTable for system_time as of T.proctime AS D ON T.id = D.id OR (T.id is null and D.id is null)`
> {code}
> Example2:
> {code:java}
> "SELECT T.id, T.len, T.content, D.name FROM T JOIN userTable for system_time as of T.proctime AS D ON T.id IS NOT  DISTINCT FROM  D.id"
> {code}
> Now run the above sql in Blink planner, the results are not expected.Because LookupJoin does not handle the case correctly.
> Here is plan:
> In 1.9 version, simply throw exception in compile phase for the above sql.
> Support the feature in 1.10 version.



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