[jira] [Created] (CALCITE-5807) implement substring_index in Apache Spark Library

["Guillaume Massé (Jira)" <ji...@apache.org>]

Guillaume Massé created CALCITE-5807:
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             Summary: implement substring_index in Apache Spark Library
                 Key: CALCITE-5807
                 URL: https://issues.apache.org/jira/browse/CALCITE-5807
             Project: Calcite
          Issue Type: Improvement
          Components: core
            Reporter: Guillaume Massé


[https://spark.apache.org/docs/2.3.0/api/sql/#substring_index]

 

 
{code:java}
substring_index(str, delim, count) - Returns the substring from str before count occurrences of the delimiter delim. If count is positive, everything to the left of the final delimiter (counting from the left) is returned. If count is negative, everything to the right of the final delimiter (counting from the right) is returned. The function substring_index performs a case-sensitive match when searching for delim.
Examples:
 
> SELECT substring_index('www.apache.org', '.', 2); www.apache
{code}
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