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micromanage

example extension to inject plans

pg_py_plan_forwarding	Forward PostgreSQL planner and executor data to embedded Python callbacks
pg_substrait	Execute Substrait protobuf or JSON query plans through PostgreSQL functions
sr_plan	Planner-hook extension that records, displays, and reuses saved execution plans, including parameterized-plan templates.
pg_no_seqscan	Prevents or reports sequential scans in development and CI by inspecting query plans.
repeater	Demonstration extension for executing serialized raw query plans on a remote PostgreSQL node.
pg_repeater	Replicates utility statements and serialized query plans to a remote PostgreSQL node over postgres_fdw.
pg_session_trace	Trace session SQL, bind variables, execution plans, and timing metrics
mv_rewrite	Query rewriting extension that transparently rewrites queries to use lower-cost materialized views.
optpaths	Planner hook extension for adding paths and removing self joins
explanation	EXPLAIN plan parser that returns plan nodes as relational rows organized as a proximity tree.