public function isNotNull($column, $logicalAnd = true) {
        $this->customWhere('`:TBL:`.`' . Util::camelTo_($column) . '` IS NOT NULL',
                $logicalAnd ? 'AND' : 'OR');
        return $this;
    }
public function isNotNull($column, $logicalAnd = true) {
        $this->customWhere('`:TBL:`.`' . Util::camelTo_($column) . '` IS NOT NULL',
                $logicalAnd ? 'AND' : 'OR');
        return $this;
    }
public function isNotNull ( $ column , $ logicalAnd = true ) { $ this -> customWhere ( '`:TBL:`.`' . Util :: camelTo_ ( $ column ) . '` IS NOT NULL' , $ logicalAnd ? 'AND' : 'OR' ) ; return $ this ; }
Select a column where the value is not null
@param string $column
@param boolean $logicalAnd Indicates whether to use logical AND (TRUE) or OR (FALSE)
@return Table
Select a column where the value is not null