Julian Hyde created CALCITE-1439:
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Summary: Handling errors during constant reduction
Key: CALCITE-1439
URL: https://issues.apache.org/jira/browse/CALCITE-1439
Project: Calcite
Issue Type: Bug
Reporter: Julian Hyde
Assignee: Julian Hyde
A literal is a constant, and so a cast of a literal is also a constant, but
when we do constant reduction sometimes there are errors if the cast is not
valid. For example, the query
{code}
values cast('' as integer)
{code}
gives {{ExceptionInInitializerError}} and, to make matters worse, the Avatica
JDBC driver does not catch the exception (because it is a {{java.lang.Error}})
and wrap it as a {{java.sql.SQLException}} as it ought to.
Note that {{cast('1.2' as integer)}} is also invalid but {{cast(' -1 ' as
integer)}} is valid.
This issue probably also applies to divide-by-zero and other exceptions
evaluating scalar expressions.
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