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create table t1 as select n as id, md5(n::text) as txt from generate_series(1, 10) s(n); create table t2 as select n as id, md5((n + 100)::text) as txt from generate_series(1, 10) s(n); create function func_test() returns table (id int, txt text, txt2 text) language plpgsql as $$ declare qry text; begin qry := $q$select t1.*, t2.txt as txt2 from t1 join t2 using(id)$q$; return query execute qry; end; $$; select * from func_test();

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