[jira] [Created] (KYLIN-899) add "if" support in sum

[liangmeng (JIRA)]

liangmeng created KYLIN-899:
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             Summary: add "if" support in sum
                 Key: KYLIN-899
                 URL: https://issues.apache.org/jira/browse/KYLIN-899
             Project: Kylin
          Issue Type: Improvement
            Reporter: liangmeng


add "if" support in  sum,such as :
select sum(if(col>1024,col,0)) as newcol from testtabale;



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