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select row_to_json(row('_', substr(md5(random()::text), 1, 50))); --select row_to_json(select 1 as a, 2 as b ) SELECT 1,2.5,'this is a test' , now() - (random() * (interval '90 days')); /* select row_to_json(uuid_generate_v4() ,generate_series(1, 1000) , now() - (random() * (interval '90 days')) ,substr(md5(random()::text), 1, 50))*/

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