Potentially missing PRIMARY KEY or UNIQUE constraints (based on sequence generators)

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WITH key_columns AS (select target_schema as table_schema, target_table as table_name, a.attname as column_name
from (select 
(select nspname from pg_namespace where oid=c.relnamespace) as target_schema,
c.relname as target_table, 
c.oid as target_table_oid,
unnest(o.conkey) AS target_col
from pg_constraint o inner join pg_class c on c.oid = o.conrelid
where o.contype in ('p','u')) t
inner join pg_attribute a on t.target_col = a.attnum and t.target_table_oid = a.attrelid and a.attisdropped = false),
seq_columns AS (SELECT table_schema, table_name, column_name
FROM INFORMATION_SCHEMA.columns c
LEFT JOIN information_schema.domains d USING (domain_schema, domain_name)
WHERE (table_schema, table_name) IN (SELECT table_schema, table_name
FROM INFORMATION_SCHEMA.tables WHERE table_type='BASE TABLE') AND 
table_schema NOT IN (SELECT schema_name
FROM INFORMATION_SCHEMA.schemata
WHERE schema_name<>'public' AND
schema_owner='postgres' AND schema_name IS NOT NULL)
AND (coalesce (c.column_default, d.domain_default) ILIKE '%nextval%' OR is_identity='YES'))
SELECT table_schema, table_name, column_name
FROM seq_columns
EXCEPT SELECT table_schema, table_name, column_name
FROM key_columns
ORDER BY table_schema, table_name;