Itiel Sadeh created CALCITE-5855:
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Summary: Implement frame exclusion in window functions
Key: CALCITE-5855
URL: https://issues.apache.org/jira/browse/CALCITE-5855
Project: Calcite
Issue Type: Bug
Reporter: Itiel Sadeh
PostgreSQL supports "frame exclusion" in window function, e.g. :
{code:sql}
SELECT sum(x) OVER (PARTITION BY y ORDER BY z ROWS BETWEEN UNBOUNDED PRECEDING
and UNBOUNDED FOLLOWING EXCLUDE CURRENT ROW) from t
{code}
(see
[here|https://www.postgresql.org/docs/current/sql-expressions.html#SYNTAX-WINDOW-FUNCTIONS])
which let you ignore some rows from the selected scope.
This ticket is adding support for it in Calcite
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