query indent

  var query;

  var draw_stm = 

    "DRAW LINECHART WITH XDOMAIN FROM_TIMESTAMP(" + 

    start_time + "), FROM_TIMESTAMP(" + end_time + ")"

    + " AXIS BOTTOM AXIS LEFT; ";

  var select_expr = "SELECT time AS x, ";

  var from_expr = " FROM ";

    "DRAW LINECHART\n  XDOMAIN\n    FROM_TIMESTAMP(" + 

    start_time + "),\n    FROM_TIMESTAMP(" + end_time + ")"

    + "\n  AXIS BOTTOM\n  AXIS LEFT;\n\n";

  var select_expr = "SELECT\n    time AS x,\n    ";

  var from_expr = "\n  FROM\n";

  var where_expr = "";

  var group_expr = "";

  var hasAggregation = false;

  if (view == "value") {

    select_expr += "value as y ";

  } else if (view == "rollup_sum" || view == "rollup_count" || view == "rollup_mean") {

    draw_stm = "DRAW BARCHART AXIS BOTTOM AXIS LEFT;";

    draw_stm = "DRAW BARCHART\n  AXIS BOTTOM\n  AXIS LEFT;";

    var func = (view.split("_"))[1];

    //how to define which column should be selected

    select_expr = 

      " SELECT `" + columns[0] + "` AS X, " + func + "(value) AS Y";

      " SELECT\n    `" + columns[0] + "` AS X,\n    " + func + "(value) AS Y";

    hasAggregation = true;

  } else {

  }

  /* complete from_expr */

  from_expr += "`" + table_ref + "`";

  from_expr += "    `" + table_ref + "`\n";

  /*complete where_expr */

  if (start_time != undefined && end_time != undefined) {

    where_expr =

      " WHERE time > FROM_TIMESTAMP(" + start_time + ")" +

      "  WHERE\n    time > FROM_TIMESTAMP(" + start_time + ")\n" +

      "    AND time < FROM_TIMESTAMP(" + end_time + ")";

  }