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CREATE OR REPLACE FUNCTION try_cast(_value TEXT, INOUT _default ANYELEMENT) AS $$ BEGIN EXECUTE FORMAT('SELECT %L::%s', $1, PG_TYPEOF(_default)) INTO _default; EXCEPTION WHEN OTHERS THEN -- do nothing: _out already carries default END $$ LANGUAGE "plpgsql"; SELECT try_cast('123', NULL::INT), try_cast('12a', NULL::INT);
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