public function delete() {
        $query = new DeleteQuery($this->getTable());
        $query->whereConditionGroup($this->getWhereConditionGroup());
        return $this->connection->exec($query);
    }
public function delete() {
        $query = new DeleteQuery($this->getTable());
        $query->whereConditionGroup($this->getWhereConditionGroup());
        return $this->connection->exec($query);
    }
public function delete ( ) { $ query = new DeleteQuery ( $ this -> getTable ( ) ) ; $ query -> whereConditionGroup ( $ this -> getWhereConditionGroup ( ) ) ; return $ this -> connection -> exec ( $ query ) ; }
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@return mixed
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