Hibernate 6.2+ supports Common Table Expressions (CTEs) via the WITH clause in HQL queries. CTEs let you define named intermediate result sets that simplify complex queries by avoiding repeated subqueries. The post covers basic CTE usage with filtering and aggregation, and recursive CTEs for traversing hierarchical data (e.g., finding all subordinates in an org chart). Key constraints include that WITH clause return types are always AnonymousTupleType, requiring individual named values rather than full entities. Recursive CTEs use UNION to self-reference the named result set, enabling graph traversal across arbitrary depth.
Table of contents
1. Introduction2. What are Common Table Expressions3. Setting Up4. Basic CTEs in Hibernate5. Recursive CTEs6. Summary10.9K Impressions