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create table test(id int, some_column jsonb); insert into test(id, some_column) values (1, '[{"name": "1_1"}, {"name": "1_2"}]'), (2, '[{"name": "2_1"}, {"name": "2_2"}]'); select id, json_agg(d->'name') from test cross JOIN LATERAL jsonb_array_elements(some_column) as d group by test.id;
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