[jira] [Commented] (CALCITE-3850) AssertionError when converts a SQL parse tree into a relational algebra expression

["Danny Chen (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CALCITE-3850?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17055722#comment-17055722 ] 

Danny Chen commented on CALCITE-3850:
-------------------------------------

So, that is exactly the problem there, a quick preview, it seems that is relevant with the RexSimplify and the nullability is not as expected.

It's cool if you can give some re-producable case in Calcite side.

> AssertionError when converts a SQL parse tree into a relational algebra expression
> ----------------------------------------------------------------------------------
>
>                 Key: CALCITE-3850
>                 URL: https://issues.apache.org/jira/browse/CALCITE-3850
>             Project: Calcite
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 1.21.0
>            Reporter: fa zheng
>            Priority: Major
>
> I execute following sql with calcite 1.21.0 in flink 1.10. When the two conditions of left outer join are like"ON t1.a=t2.a" and "ON t1.a=t3.a ", it execute successfully. However, when the two conditions of left outer join are like "ON IF(t1.a='...',CAST(RAND(123) AS STRING),t1.a)=t2.a" and "ON IF(t1.a='...',CAST(RAND(123) AS STRING),t1.a)=t3.a", it gets a assert error in method getRootField.
> It also can execute successfully with "ON t1.a=t2.a" and "ON IF(t1.a='...',CAST(RAND(123) AS STRING),t1.a)=t3.a".
> But failed with "ON IF(t1.a='...',CAST(RAND(123) AS STRING),t1.a)=t2.a" and "ON t1.a=t3.a"
> SELECT 
>      ...            
> FROM 
> (
> 	SELECT
> 		...
> ) t1          
> LEFT OUTER JOIN 
> (
>     SELECT 
>        ...
> ) t2
> ON ...
> LEFT OUTER JOIN
> (
>      SELECT  
>          ...
> ) t3
> ON ...         



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