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VACUUM;
--
-- Sanity check: every system catalog that has OIDs should have
-- a unique index on OID. This ensures that the OIDs will be unique,
-- even after the OID counter wraps around.
-- We exclude non-system tables from the check by looking at nspname.
--
SELECT relname, nspname
FROM pg_class c LEFT JOIN pg_namespace n ON n.oid = relnamespace JOIN pg_attribute a ON (attrelid = c.oid AND attname = 'oid')
WHERE relkind = 'r' and c.oid < 16384
AND ((nspname ~ '^pg_') IS NOT FALSE)
AND NOT EXISTS (SELECT 1 FROM pg_index i WHERE indrelid = c.oid
AND indkey[0] = a.attnum AND indnatts = 1
AND indisunique AND indimmediate);
-- check that relations without storage don't have relfilenode
SELECT relname, relkind
FROM pg_class
WHERE relkind IN ('v', 'c', 'f', 'p', 'I')
AND relfilenode <> 0;
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