Sailesh Mukil f06497e1d6 IMPALA-2457: PERCENT_RANK() returns NaN for row group with 1 row ...

The analytic function PERCENT_RANK() is implemented as a query
rewrite in the analysis stage. An edge case where the count of the
rows returned is 1 resulted in a divide by zero which returned NaN
as the result. This patch fixes that by creating a conditional
expression.

Change-Id: Ic8d826363e4108e0246b8e844355f3382a4a3193
Reviewed-on: http://gerrit.cloudera.org:8080/1131
Reviewed-by: Sailesh Mukil <sailesh@cloudera.com>
Tested-by: Internal Jenkins

2015-10-07 14:47:37 -07:00

..

queries

IMPALA-2457: PERCENT_RANK() returns NaN for row group with 1 row

2015-10-07 14:47:37 -07:00

functional-query_core.csv

Reorganize/reduce end to end test time.

2014-08-17 12:43:57 -07:00

functional-query_dimensions.csv

Treat HBase as a file format for functional tests

2014-01-08 10:52:36 -08:00

functional-query_exhaustive.csv

Reading compressed text.

2014-07-29 20:28:36 -07:00

functional-query_pairwise.csv

Treat HBase as a file format for functional tests

2014-01-08 10:52:36 -08:00