How to display records of select query with left join in table using foreach?

In Model

public function get_user(){    $query = $this->db->query("select a.id, a.name, b.job from table_a a        left join table_b b on b.id=a.id        order by a.id");    $result = $query->result_array();    return $result;}

In Controller

$data['get_user'] = $this->model_name->get_user();$this->load->view("view_name", $data);

In View

<table id="tablestyle" class="table table-bordered table-hover table-condensed">    <col width="50">    <col width="150">    <col width="150">    <col width="150">    <thead>        <tr>            <th><strong>ID</strong></th>            <th><strong>NAME</strong></th>            <th><strong>JOB</strong></th>            <th></th>        </tr>    </thead>    <tbody>        <?php foreach($get_user as $rowItem) {  ?>                <tr>                    <td><?php echo $rowItem['a.id'] ?></td>                    <td><?php echo $rowItem['a.name'] ?></td>                    <td><?php echo $rowItem['b.job'] ?></td>                    <td><input type="submit" value="Modify" id="btnModify" class="btn btn-block btn-success btn-xs" onclick="btnModify('<?php echo $rowItem['a.id'] ?>');"/></td>                </tr>        <?php } ?>    </tbody></table>