Khurram Faraaz created DRILL-4942:
-------------------------------------
Summary: incorrect result - case when (not null is null) then
true else false end
Key: DRILL-4942
URL: https://issues.apache.org/jira/browse/DRILL-4942
Project: Apache Drill
Issue Type: Bug
Components: Execution - Flow
Affects Versions: 1.9.0
Reporter: Khurram Faraaz
Drill's result is different from that of Calcite and Postgres result.
Postgres 9.3 results
{noformat}
postgres=# select (case when (not null is null) then true else false end) from
(values(1)) foo;
case
------
f
(1 row)
{noformat}
Calcite release 1.8.0 too returns false
{noformat}
0: jdbc:calcite:model=target/test-classes/mod> select (case when (not null is
null) then true else false end) from (values(1));
+--------+
| EXPR$0 |
+--------+
| false |
+--------+
1 row selected (1.271 seconds)
{noformat}
Drill 1.9.0 git commit ID: 4edabe7a, returns true
{noformat}
0: jdbc:drill:schema=dfs.tmp> select (case when (not null is null) then true
else false end) from (values(1));
+---------+
| EXPR$0 |
+---------+
| true |
+---------+
1 row selected (0.096 seconds)
{noformat}
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