docs: function buildDatePartial() {
          if (self.sDateColumnName && self.dateFrom || self.dateTo) {
              // console.log( "DateFrom %s to %s", self.dateFrom, self.dateTo );
              if (self.dateFrom && self.dateTo) {
                  return self.sDateColumnName + " BETWEEN '" + self.dateFrom.toISOString() + "' AND '" + self.dateTo.toISOString() + "'";
              } else if (self.dateFrom) {
                  return self.sDateColumnName + " >= '" + self.dateFrom.toISOString() + "'";
              } else if (self.dateTo) {
                  return self.sDateColumnName + " <= '" + self.dateTo.toISOString() + "'";
              }
          }
          return undefined;
      }