Kirill Tkalenko created IGNITE-28971:
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Summary: SQL Calcite: Introduce value resolver for FETCH, OFFSET,
and LIMIT
Key: IGNITE-28971
URL: https://issues.apache.org/jira/browse/IGNITE-28971
Project: Ignite
Issue Type: Improvement
Reporter: Kirill Tkalenko
Assignee: Kirill Tkalenko
FETCH, OFFSET, and LIMIT values may require different handling. For example:
{{}}
{code:java}
SELECT * FROM person FETCH FIRST 1.5 ROWS ONLY;
-- Oracle: the fractional part is truncated, so 1 row is returned.
-- PostgreSQL: the value is rounded to the nearest integer, so 2 rows are
returned.
SELECT * FROM person FETCH FIRST NULL ROWS ONLY;
-- Oracle: no rows are returned.
-- PostgreSQL: no limit is applied.
SELECT * FROM person OFFSET NULL ROWS;
-- Oracle: no rows are returned.
-- PostgreSQL: no offset is applied.{code}
{{}}
Introduce a common mechanism for applying these rules consistently during query
validation and execution.
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