我有一份声明,提出了某些范围内的项目的详细信息。所有细节都假设是这样的..
id | color | shape | material |
----------------------------
i45 | blue | square | plastic |
i46 | blue | square | plastic |
i47 | blue | square | plastic |
但是如果没有正确定义范围:
id | color | shape | material |
----------------------------
i45 | blue | square | plastic |
i46 | blue | square | plastic |
i47 | blue | square | plastic |
i48 | red | square | plastic |
我需要查询以恢复具有与其他值不同的值的列名称。列名将显示在弹出窗口中。目前我有一个声明:
$chk = "SELECT DISTINCT
color,
shape,
material,
FROM $table
WHERE id BETWEEN $StartID AND $EndID";
$res = mysqli_query($con, $chk) or die (mysqli_error($con));
$r = mysqli_num_rows($res);
if ($r > 1)
<script language="JavaScript">alert ("Some fields have different data")</script>
只发现是否有不同的值..但我是如何获取具有不同值的列名称的堆栈。 请帮忙..
答案 0 :(得分:0)
尝试
SELECT count( DISTINCT color ) as Color, count( DISTINCT shape ) as shape, count( DISTINCT material) as Material
FROM $table;
现在那些值大于1的列的值与其他列不同。