SQL/PGQ in Practice: GRAPH_TABLE on Oracle and PostgreSQL 19

• From: Jihoo Park | Date: Wed, 15 Jul 2026 22:53:03 +0000 #
  Subject: SQL/PGQ in Practice: GRAPH_TABLE on Oracle and PostgreSQL 19

  https://jamsql.com/blog/2026-07-11-sql-pgq-graph-table-oracle-postgresql/ SQL/PGQ in Practice: GRAPH_TABLE on Oracle and PostgreSQL 19 SQL/PGQ - Part 16 of the SQL standard (ISO/IEC 9075-16) - lets you define a property graph over the relational tables you already have and query it with visual patterns like (a)-[r]->(b) instead of hand-written recursive CTEs. Two engines now speak it: Oracle Database 23ai and later (native, GA, every edition including Free) and PostgreSQL 19, whose first implementation shipped in beta 1 in June 2026. This post is a practical tour: a worked example, a side-by-side of what each engine's dialect actually accepts - the Oracle column live-tested in July 2026, error codes included - and the one gotcha that bites every Node.js-based client. Read More: https://jamsql.com/blog/2026-07-11-sql-pgq-graph-table-oracle-postgresql/

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