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declare 
  i integer;
  j integer;
begin
  -- 9*9乘法表
  for i in 1..9 loop
    for j in 1..i loop
      dbms_output.put(i||'*'||j||'='||i*j||chr(9));
    end loop;
    dbms_output.new_line;
  end loop;
end;