Hi, 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] Sudip[cid:image001.png@01D0EED8.6C54AE60] ***************************Legal Disclaimer*************************** "This communication may contain confidential and privileged material for the sole use of the intended recipient. Any unauthorized review, use or distribution by others is strictly prohibited. If you have received the message by mistake, please advise the sender by reply email and delete the message. Thank you." **********************************************************************
