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Posted to issues@spark.apache.org by "Wan Kun (Jira)" <ji...@apache.org> on 2025/09/11 09:43:00 UTC

[jira] [Created] (SPARK-53552) Optimize substr SQL function

Wan Kun created SPARK-53552:
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             Summary: Optimize substr SQL function 
                 Key: SPARK-53552
                 URL: https://issues.apache.org/jira/browse/SPARK-53552
             Project: Spark
          Issue Type: Improvement
          Components: SQL
    Affects Versions: 4.1.0
            Reporter: Wan Kun


In substringSQL() functions, if pos > 0 then we don't need to calculate numChars(). 



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