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https://issues.apache.org/jira/browse/CALCITE-1502?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Julian Hyde resolved CALCITE-1502.
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Resolution: Fixed
Fixed in http://git-wip-us.apache.org/repos/asf/calcite/commit/9b62ab3d.
[~sharnyk], thanks for the PR!
> AssertionError when case statement is used with optional value and literal
> using ReduceExpressionsRule
> ------------------------------------------------------------------------------------------------------
>
> Key: CALCITE-1502
> URL: https://issues.apache.org/jira/browse/CALCITE-1502
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.10.0
> Reporter: Serhii Harnyk
> Assignee: Julian Hyde
> Fix For: 1.11.0
>
>
> AssertionError when we use case with optional value and literal using
> ReduceExpressionsRule:
> {noformat}
> SELECT CASE WHEN 1=2 THEN cast((values(1)) as integer) ELSE 2 end from
> (values(1))
> {noformat}
> Stack trace:
> {noformat}
> java.lang.AssertionError: Internal error: Cannot add expression of different
> type to set:
> set type is RecordType(INTEGER EXPR$0) NOT NULL
> expression type is RecordType(INTEGER NOT NULL EXPR$0) NOT NULL
> set is rel#14:LogicalProject(input=HepRelVertex#13,EXPR$0=CASE(=(1, 2),
> CAST($1):INTEGER, 2))
> expression is LogicalProject#16
> {noformat}
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