code: protected void bindLiteral(int paramIndex, String s, int oid) throws SQLException {
      preparedParameters.setLiteralParameter(paramIndex, s, oid);
    }
docs: Note if s is a String it should be escaped by the caller to avoid SQL injection attacks. It is
  not done here for efficiency reasons as most calls to this method do not require escaping as
  the source of the string is known safe (i.e. {@code Integer.toString()})
  
  @param paramIndex parameter index
  @param s value (the value should already be escaped)
  @param oid type oid
  @throws SQLException if something goes wrong