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https://issues.apache.org/jira/browse/DERBY-2809?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Daniel John Debrunner closed DERBY-2809.
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Resolution: Fixed
Fixed, changes merged into 10.3, tests added.
> Expressions with a parameter can be assigned the incorrect type
> ---------------------------------------------------------------
>
> Key: DERBY-2809
> URL: https://issues.apache.org/jira/browse/DERBY-2809
> Project: Derby
> Issue Type: Bug
> Components: SQL
> Affects Versions: 10.3.0.0
> Reporter: Daniel John Debrunner
> Assignee: Daniel John Debrunner
> Fix For: 10.3.1.1, 10.4.0.0
>
>
> Some unary operator nodes with a parameter can be assigned incorrect types
> during bind time, for example SQRT(?) can become a BOOLEAN expression.
> This statement compiles successfully when it should be rejected as SQRT() is
> not a boolean function.
> ij> values case when sqrt(?) then 3 else 4 end;
> ERROR 07000: At least one parameter to the current statement is uninitialized.
> When a constant is used the correct binding happens.
> ij> values case when sqrt(9.0) then 3 else 4 end;
> ERROR 42X88: A conditional has a non-Boolean operand. The operand of a
> conditional must evaluate to TRUE, FALSE, or UNKNOWN.
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