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Posted to dev@calcite.apache.org by "Liya Fan (Jira)" <ji...@apache.org> on 2020/08/05 04:19:00 UTC
[jira] [Created] (CALCITE-4155) Simplify in expression of discreet
values
Liya Fan created CALCITE-4155:
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Summary: Simplify in expression of discreet values
Key: CALCITE-4155
URL: https://issues.apache.org/jira/browse/CALCITE-4155
Project: Calcite
Issue Type: New Feature
Components: core
Reporter: Liya Fan
Assignee: Liya Fan
For example, given expressions like
{{a in (1, 2, 3, 4, 5)}}
or
{{a = 1 or a = 2 or a = 3 or a = 4 or a = 5}},
we can simplify it to
{{a >= 1 and a <= 5}}
Such simplification reduces the number of value comparisons from 5 to 2.
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