Here it is: SELECT * FROM (SELECT 'ABC' `UserID` FROM `dfs`.`path_to_parquet_file` tc LIMIT 2147483647) `t0` INNER JOIN (SELECT 'ABC' `UserID` FROM `dfs`.`path_to_parquet_file` tc LIMIT 2147483647) `t1` ON ( `t0`.`UserID` IS NOT DISTINCT FROM `t1`.`UserID`) LIMIT 2147483647
I debugged Drill code and found it decomposes *IS NOT DISTINCT FROM* into *`t0`.`UserID` = `t1`.`UserID` OR (`t0`.`UserID` IS NULL && `t1`.`UserID` IS NULL**)* while checking if the query is a cartesian join, and when the check returns true, it throws an excetion saying: *This query cannot be planned possibly due to either a cartesian join or an inequality join* *---------------------* *Muhammad Gelbana* http://www.linkedin.com/in/mgelbana On Sat, May 6, 2017 at 6:53 PM, Gautam Parai <gpa...@mapr.com> wrote: > Can you please specify the query you are trying to execute? > > > Gautam > > ________________________________ > From: Muhammad Gelbana <m.gelb...@gmail.com> > Sent: Saturday, May 6, 2017 7:34:53 AM > To: u...@drill.apache.org; dev@drill.apache.org > Subject: Running cartesian joins on Drill > > Is there a reason why Drill would intentionally reject cartesian join > queries even if *planner.enable_nljoin_for_scalar_only* is disabled ? > > Any ideas how could a query be rewritten to overcome this restriction ? > > *---------------------* > *Muhammad Gelbana* > http://www.linkedin.com/in/mgelbana >
