Steve Carlin 420e357b95 IMPALA-13695: Calcite planner: fix for ndv with 2 args ...

The NDV function was crashing when called with the "scale" arg. This
requires special processing which exists in FunctionCallExpr.

The validation for this is now done in ImpalaNdvFunction
and the special calculation is done within ImpalaAggRel

This also fixes ndv for varchar types. The aggregation call
within CoerceNodes was not differentiating between varchar
and string. A cast to string function is needed in order
to run the ndv function on a varchar column.

Change-Id: I82419f77e043e9975865a042ffb8db75a26931f7
Reviewed-on: http://gerrit.cloudera.org:8080/23513
Reviewed-by: Riza Suminto <riza.suminto@cloudera.com>
Tested-by: Impala Public Jenkins <impala-public-jenkins@cloudera.com>

2025-10-20 23:28:39 +00:00

..

src

IMPALA-13695: Calcite planner: fix for ndv with 2 args

2025-10-20 23:28:39 +00:00

.gitignore

…

pom.xml

IMPALA-14504: Use shaded hbase, protobuf from Hadoop

2025-10-17 01:47:18 +00:00