Julian Hyde created CALCITE-3286:
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Summary: In LatticeSuggester, allow join conditions that use
expressions
Key: CALCITE-3286
URL: https://issues.apache.org/jira/browse/CALCITE-3286
Project: Calcite
Issue Type: Bug
Reporter: Julian Hyde
In {{LatticeSuggester}}, allow join conditions that use expressions. For
example, the query
{code}
select *
from emp
join dept on emp.deptno + 1 = dept.deptno
{code}
uses an expression "emp.deptno + 1" on the "emp" side of the join key.
Currently this query throws:
{noformat}
java.lang.ClassCastException: class
org.apache.calcite.materialize.LatticeSuggester$DerivedColRef cannot be cast to
class org.apache.calcite.materialize.LatticeSuggester$BaseColRef
at
org.apache.calcite.materialize.LatticeSuggester.frame(LatticeSuggester.java:478)
at
org.apache.calcite.materialize.LatticeSuggester.frame(LatticeSuggester.java:420)
at
org.apache.calcite.materialize.LatticeSuggester.frame(LatticeSuggester.java:399)
at
org.apache.calcite.materialize.LatticeSuggester.addQuery(LatticeSuggester.java:124)
{noformat}
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