Question

我有mysql表性能（id，名称，类型，值，日期），我正在使用动态查询，如

SELECT performance.name,
       performance.type,
       Coalesce(Sum((CASE
                         WHEN (performance.date = '2017-11-02') THEN performance.value
                     END)), 0) AS "2-Nov"
FROM performance
WHERE performance.type = 'Max'
GROUP BY performance.name,
         performance.type

根据开始日期和结束日期获取datewise列输出。我使用mysql_fetch_array函数echo "<td>" . $row['2-Nov(In)'] . "</td>";在php页面上打印mysql查询结果，并且使用静态条目可以很好地解决问题。我想基于动态mysql查询在我的PHP代码上添加自动增量列，以便$ row []的数量将根据开始日期和结束日期在数组内部更改。例如：

`echo "<td>" . $row['2-Nov(In)'] . "</td>";
`echo "<td>" . $row['3-Nov(In)'] . "</td>";`
`echo "<td>" . $row['4-Nov(In)'] . "</td>";` etc.

我的查询示例输出

name                      | type | 2-Nov |
+-----------------------------------------+
| Name1                     | Max  | 72.97 |
| Name2                     | Max  |  34.2 |
| Name3                     | Max  | 15.14 |
| Name4                     | Max  | 11.38 |
+-----------------------------------------+-

我使用以下代码打印查询输出

$sql = "$a $b $d $d";
$result = @mysql_query($sql,$connection) or die(mysql_error());
while ($row = mysql_fetch_array($result))
{
echo "<tr>";
echo "<td>" . $row[name] . "</td>";
echo "<td>" . $row[type] . "</td>";
echo "<td>" . $row['2-Nov(In)'] . "</td>"; <-- start date
echo "<td>" . $row['3-Nov(In)'] . "</td>";  $row auto increase/decrease
echo "<td>" . $row['4-Nov(In)'] . "</td>";  based on start and end date
echo "<td>" . $row['5-Nov(In)'] . "</td>"; <-- end date
echo "</tr>";
}

基于mysql查询的Php自动增量列

0 个答案: