Karen Coppage created HIVE-21868:
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             Summary: Vectorize CAST...FORMAT
                 Key: HIVE-21868
                 URL: https://issues.apache.org/jira/browse/HIVE-21868
             Project: Hive
          Issue Type: Improvement
            Reporter: Karen Coppage
            Assignee: Karen Coppage


Introduce FORMAT clause to CAST statements as well as the below limited list of 
SQL:2016 datetime formats to Hive in general.
 * YYYY
 * MM
 * DD
 * HH
 * MI
 * SS
 * YYY
 * YY
 * Y
 * RRRR
 * RR
 * DDD
 * HH12
 * HH24
 * SSSSS
 * FF[1..9]
 * AM/A.M.
 * PM/P.M.
 * TZH
 * TZM

Definitions of these formats here: 
[https://docs.google.com/document/d/1V7k6-lrPGW7_uhqM-FhKl3QsxwCRy69v2KIxPsGjc1k/|https://docs.google.com/document/d/1V7k6-lrPGW7_uhqM-FhKl3QsxwCRy69v2KIxPsGjc1k/edit]



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