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https://issues.apache.org/jira/browse/SPARK-31132?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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duyf updated SPARK-31132:
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Attachment: image-2020-03-12-18-33-39-841.png
> receive_time<>'' Optimized Logical Plan is null
> ------------------------------------------------
>
> Key: SPARK-31132
> URL: https://issues.apache.org/jira/browse/SPARK-31132
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 2.3.1
> Reporter: duyf
> Priority: Major
> Attachments: image-2020-03-12-18-33-39-841.png
>
>
> receive_time='2020-02-10'；
> SQL：
> select case when receive_time<>''
> then 1 else 0 end as tt
> from xxx.xxx
> where order_id=1234；
> The output error is 0；
> Because cast( as timestamp) is null, receive_time<>'' is false;
>
> !image-2020-03-12-18-30-44-727.png!
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