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https://issues.apache.org/jira/browse/IGNITE-29213?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vladislav Pyatkov updated IGNITE-29213:
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Labels: calcite ignite-2 sql (was: )
> SQL Calcite: Support SEARCH clause for recursive CTE
> ----------------------------------------------------
>
> Key: IGNITE-29213
> URL: https://issues.apache.org/jira/browse/IGNITE-29213
> Project: Ignite
> Issue Type: Improvement
> Reporter: Vladislav Pyatkov
> Assignee: Vladislav Pyatkov
> Priority: Major
> Labels: calcite, ignite-2, sql
>
> Support the SQL-standard SEARCH clause for recursive CTEs in the Calcite SQL
> engine, including depth-first and breadth-first ordering.
> Call notation:
> {code:sql}
> WITH [RECURSIVE] cte_name [(column_name, ...)] AS (
> initial_query
> UNION [ALL | DISTINCT]
> recursive_query
> )
> SEARCH { DEPTH | BREADTH } FIRST BY column_name [, ...] SET order_column
> SELECT ... FROM cte_name ORDER BY order_column;
> {code}
> Implement planning and execution of SEARCH and calculation of the generated
> ordering column so that ORDER BY order_column produces the requested
> traversal order.
> Calcite syntax support is tracked by
> https://issues.apache.org/jira/browse/CALCITE-7815.
> Related CYCLE support: https://issues.apache.org/jira/browse/IGNITE-29060.
> Recursive CTE support: https://issues.apache.org/jira/browse/IGNITE-27822.
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