public function lessThan($column, $value, $logicalAnd = true,
            $valueIsColumn = false) {
        $value = $valueIsColumn ? '`:TBL:`.`' . \Util::camelTo_($value) . '`' :
                '"' . $value . '"';
        $this->customWhere('`:TBL:`.`' . Util::camelTo_($column) . '` < ' . $value,
                $logicalAnd ? 'AND' : 'OR');
        return $this;
    }