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From Sudip Mukherjee <smukher...@commvault.com>
Subject Drill- Query execution plan
Date Mon, 14 Sep 2015 05:51:56 GMT
Need some help understanding the below steps of a query execution. The below query is broken
down in to these steps.
If you could just explain me in short or point to a documentation link would be great for
me as I am trying to dig into drill code and logics.

SELECT SUM(1) AS `COL` FROM mydb.testtable HAVING COUNT(1)>0 [query is sent from tableau]


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