Postgres MERGE RETURNING: Old and New Values (2026)
July 2, 2026
Postgres 18 lets MERGE RETURNING return old and new row values in one query. See merge_action(), the xmax alternative, and verified Node.js/TypeScript code.
#node-postgres
Postgres Row-Level Security for Multi-Tenant Apps (2026)
June 27, 2026
Implement Postgres row-level security for multi-tenant apps with node-postgres: enable RLS, write current_setting policies, and avoid the pool-leak footgun.