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https://issues.apache.org/jira/browse/CALCITE-6560?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17885151#comment-17885151
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xiong duan commented on CALCITE-6560:
-------------------------------------
[~julianhyde] Strangely, I haven't encountered this situation after running it
many times. I tried to change the referencing of some variables and resubmitted
the PR. Let's see if there are still any issues.
> Add supportsNegativeScale in RelDataTypeSystem
> -----------------------------------------------
>
> Key: CALCITE-6560
> URL: https://issues.apache.org/jira/browse/CALCITE-6560
> Project: Calcite
> Issue Type: Improvement
> Reporter: xiong duan
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.38.0
>
>
> [https://www.postgresql.org/docs/current/datatype-numeric.html]
> According to the document, a numeric column with a negative scale can be
> declared beginning in PostgreSQL 15. This PR will add some tests to cover
> supportsNegativeScale is false and will throw an exception if set
> supportsNegativeScale is true.
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