CREATE EXTENSION plsample; -- Create and test some dummy functions CREATE FUNCTION plsample_result_text(a1 numeric, a2 text, a3 integer[]) RETURNS TEXT AS $$ Example of source with text result. $$ LANGUAGE plsample; SELECT plsample_result_text(1.23, 'abc', '{4, 5, 6}'); CREATE FUNCTION plsample_result_void(a1 text[]) RETURNS VOID AS $$ Example of source with void result. $$ LANGUAGE plsample; SELECT plsample_result_void('{foo, bar, hoge}');