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Posted to issues@drill.apache.org by "Jason Altekruse (JIRA)" <ji...@apache.org> on 2014/08/14 04:42:12 UTC

[jira] [Created] (DRILL-1299) Short circuit CASE statement evaluation

Jason Altekruse created DRILL-1299:
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             Summary: Short circuit CASE statement evaluation
                 Key: DRILL-1299
                 URL: https://issues.apache.org/jira/browse/DRILL-1299
             Project: Apache Drill
          Issue Type: Improvement
            Reporter: Jason Altekruse


Case statements currently are transformed into generated code that contains blocks for the conditional, when block and else block. Regardless of the result of the conditional, both of the blocks are evaluated and the correct result is taken. This currently removes the capability for case statements to be used to avoid exceptions, such as checking for an empty string before calling a function on it.



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