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Posted to dev@flink.apache.org by "grandfisher (Jira)" <ji...@apache.org> on 2023/06/28 14:25:00 UTC

[jira] [Created] (FLINK-32471) IS_NOT_NULL can add to SUITABLE_FILTER_TO_PUSH

grandfisher created FLINK-32471:
-----------------------------------

             Summary: IS_NOT_NULL can add to SUITABLE_FILTER_TO_PUSH
                 Key: FLINK-32471
                 URL: https://issues.apache.org/jira/browse/FLINK-32471
             Project: Flink
          Issue Type: Improvement
            Reporter: grandfisher


According to FLINK-31273:

The reason for the error is that other filters conflict with IS_NULL, but in fact it won't conflict with IS_NOT_NULL, because operators in SUITABLE_FILTER_TO_PUSH  such as 'SqlKind.GREATER_THAN'  has an implicit filter 'IS_NOT_NULL' according to SQL Semantics.
 
So we think it is feasible to add  IS_NOT_NULL to the SUITABLE_FILTER_TO_PUSH list.



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