Tim Armstrong has posted comments on this change. ( http://gerrit.cloudera.org:8080/11565 )
Change subject: Simplify expression to collect NULLs count ...................................................................... Patch Set 2: Your proposed version is faster than the current version, but that's because of a limitation in the if() function support: https://issues.apache.org/jira/browse/IMPALA-7655 If you rewrite with a case expression instead of if you get something thats much faster again. -- To view, visit http://gerrit.cloudera.org:8080/11565 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-MessageType: comment Gerrit-Change-Id: Ic68f8b4c3756eb1980ce299a602a7d56db1e507a Gerrit-Change-Number: 11565 Gerrit-PatchSet: 2 Gerrit-Owner: [email protected] Gerrit-Reviewer: Impala Public Jenkins <[email protected]> Gerrit-Reviewer: Tim Armstrong <[email protected]> Gerrit-Reviewer: [email protected] Gerrit-Comment-Date: Thu, 04 Oct 2018 18:28:28 +0000 Gerrit-HasComments: No
