我想问一下与其他表联系的数据透视表.它的外观如下:
结果
| DATE | A | B | C | D |
|-----------|---|----|----|----|
|2015-06-01 |10 | 20 | 30 | 20 |
|2015-06-02 |20 | 30 | 40 | 20 |
|2015-06-03 |40 | 10 | 10 | 20 |
该表来自以下两个表:
表大师
|ID|Type|
|--|----|
|1 |A |
|2 |B |
|3 |C |
表类型
|ID|Date | idType |value|
|--|----------|--------|-----|
|1 |2015-06-01| 1 | 10 |
|2 |2015-06-01| 2 | 20 |
|3 |2015-06-01| 3 | 30 |
|4 |2015-06-01| 4 | 20 |
|5 |2015-06-02| 1 | 20 |
|6 |2015-06-02| 2 | 30 |
|7 |2015-06-02| 3 | 40 |
|8 |2015-06-02| 4 | 20 |
|9 |2015-06-03| 1 | 40 |
|10|2015-06-03| 2 | 10 |
|11|2015-06-03| 3 | 10 |
|12|2015-06-03| 4 | 20 |
我在下面尝试了这个代码,但它不是succsess.
SELECT * FROM ( SELECT tgl_nab, idtype, nilai FROM jts_test ) src pivot (sum(nilai) for idtype in ([1], [2], [3],[4]) ) piv;
You have an error in your sql Syntax; check the manual that
corresponds to your MysqL server version for the right Syntax to use
near ‘pivot (sum(nilai) for idtype in ([1], [2], [3],[4]) ) piv LIMIT
0, 25’ at line 1
我也有其他相关的问题.如何在视图codeigniter中显示结果表.假设我有一个控制器来选择所有数据,如下面的代码:
public function test()
{
if($this->session->userdata('logged_in'))
{
$session_data = $this->session->userdata('logged_in');
$data['test'] = $this->report_m->get_allcontentest();
$this->load->view('header');
$this->load->view('report/test_list_view',$data);
$this->load->view('footer');
} else {
redirect('login');
}
}
我不知道模型是如何工作的,它是否写出与获得结果时相同的查询.或者还有其他方式.
在视图中它也很复杂.这是我的观点.
<div class="Box-body table-responsive">
<table id="datatable" class="table table-bordered table-hover">
<thead>
<tr>
<th>No</th>
<th><?PHP echo $baris->type; ?></th>
<th>Created At</th>
<th>Menu</th>
</tr>
</thead>
<tbody>
<?PHP
foreach($report as $baris){
?>
<tr>
<td><?PHP echo $baris->id; ?></td>
<td><?PHP echo $baris->nilai; ?></td>
<td><?PHP echo $baris->create; ?></td>
<td>
<a href="#" class="fa fa-eye"></a>
</td>
</tr>
<?PHP
}
?>
</tbody>
</table>
</div>
真的很高兴你的帮助.
解决方法:
您可以使用动态交叉表:
SET @sql = NULL;
SELECT
GROUP_CONCAT(disTINCT
CONCAT(
'MAX(CASE WHEN m.idType = ',
Id,
' THEN value END) AS ',
Type
)
) INTO @sql
FROM tblType;
SET @sql =
CONCAT('SELECT m.Date, ', @sql, ' FROM tblMaster m INNER JOIN tblType t ON t.Id = m.idType GROUP BY m.Date ORDER BY m.Date');
PREPARE stmt FROM @sql;
EXECUTE stmt;
DEALLOCATE PREPARE stmt;
有关动态枢轴的更多信息,请阅读此article.