[jira] [Commented] (CALCITE-3832) NPE when decimal cast double

["Julian Hyde (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CALCITE-3832?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17046327#comment-17046327 ] 

Julian Hyde commented on CALCITE-3832:
--------------------------------------

I think we have several similar bugs where we check for null but use rte result anyway. Can you link to them?

There is a case with a PR that claims to clean up the generated code. I wonder whether it solves this case. 

> NPE when decimal cast double 
> -----------------------------
>
>                 Key: CALCITE-3832
>                 URL: https://issues.apache.org/jira/browse/CALCITE-3832
>             Project: Calcite
>          Issue Type: Bug
>          Components: core
>    Affects Versions: 1.16.0
>            Reporter: Zhixiong Chen
>            Priority: Major
>
> sql like:
> select
> cast(Column1 as DOUBLE) + cast(Column2 as DOUBLE) AS "COLUMN5",
> cast(Column3 as DOUBLE) + cast(Column4 as DOUBLE) AS "COLUMN6"
> from TABLE
> The Column1、Column2、Column3、Column4 type is decimal(19,4)
> But it throw npe in decimal cast to double
> then I find in calcite plan it doesn't  deal with null
> /* 24 */ final java.math.BigDecimal inp14_ = current[14] == null ? (java.math.BigDecimal) null : org.apache.calcite.runtime.SqlFunctions.toBigDecimal(current[14]);
> /* 25 */ final double v = inp14_.doubleValue();
>  



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