PostgreSQL Advanced SQL

Use When

• Advanced PostgreSQL SQL patterns sourced from "Mastering PostgreSQL" (Supabase/Manning) and "Introduction to PostgreSQL for the Data Professional". Covers modern SQL (CTEs, recursive queries, window functions), JSONB operators, array operations, full-text search (tsvector/tsquery, GIN indexes, ranking), LATERAL joins, and anonymous code blocks. Companion to postgresql-fundamentals and postgresql-performance.
• The task needs reusable judgment, domain constraints, or a proven workflow rather than ad hoc advice.

Do Not Use When

• The task is unrelated to postgresql-advanced-sql or would be better handled by a more specific companion skill.
• The request only needs a trivial answer and none of this skill's constraints or references materially help.

Required Inputs

• Gather relevant project context, constraints, and the concrete problem to solve.
• Confirm the desired deliverable: design, code, review, migration plan, audit, or documentation.

Workflow