Lai Zhou created CALCITE-2992:
---------------------------------
Summary: Make implicit conversions when generating hash join keys
for an equiCondition
Key: CALCITE-2992
URL: https://issues.apache.org/jira/browse/CALCITE-2992
Project: Calcite
Issue Type: Improvement
Components: core
Affects Versions: 1.19.0
Reporter: Lai Zhou
Considering follow sql join:
{code:java}
select t1.*,t2.* from t1 join t2 on t1.intValue=t2.longValue
{code}
as known in java :
{code:java}
Integer intValue = 2;
Long longValue = 2L;
Objects.equals(intValue, longValue) = false;
{code}
We shoudn't use the orginal Object as a key in the HashMap,
I think it'd be better to convert hash join keys to string and compare string
values.
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
