WIP

/* in singleMetricView */

FnordMetric.util.generateSQLQueryFromParams = function(params) {

  //FIX html escape 

  var query;

  var draw_stm = "DRAW LINECHART AXIS BOTTOM AXIS LEFT; ";

  var select_expr = "SELECT time AS x, ";

  var from_expr = " FROM ";

  var where_expr = "";

  var group_expr = "";

  var hasAggregation = false;

  var table_ref = params.innerViewValue

  var view = params.view;

  /* column for rollups */

  var columns = params.columns.split(",");; 

  var start_time = params.start_time;

  var end_time = params.end_time;

  var start_time = Math.round(params.start_time / 1000);

  var end_time = Math.round(params.end_time / 1000);

  var t_step = params.t_step;

  var t_window = params.t_window;

  var by = params.by;

  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 ";

  var where_expr = "";

  var group_expr = "";

  var hasAggregation = false;

  /* complete select_expr */

  if (view == "value") {

    select_expr += "value as y ";

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

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

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

    //how to choose a column if there are more than one? 

    //how to define which column should be selected

    select_expr = 

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

    //hasAggregation = true; ??

    hasAggregation = true;

  } else {

    select_expr +=

      view.toLowerCase() + "(value) AS Y";

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

  /*complete where_expr */

  //is there any case in single metric view where only start or endtime are selected?

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

    //what to use in place of FROM_TIMESTAMP

    where_expr =

      " WHERE time > FROM_TIMESTAMP(" + Math.round(start_time / 1000) + ")" +

      " AND time < FROM_TIMESTAMP(" + Math.round(end_time / 1000) + ")";

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

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

  }

    if (by != undefined) {

      hasGroupStm = true;

      //check by format

      group_expr += "BY " + by;

    }