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select * from pg_indexes
where schemaname like '<schema-name>' and tablename like '<table-name>'
Lazy Lizard
select * from pg_indexes
where schemaname like '<schema-name>' and tablename like '<table-name>'-- This will also return use the hidden index that automatically created by primary key and unique....
SELECT relname, relkind
FROM pg_class
WHERE relkind = 'i';