Question

我想根据以下表单过滤mysql结果

www.dabndash.com/filter.php

我一直在尝试的过滤器的mysql代码是：

SELECT DISTINCT * FROM paintings 
  WHERE (price BETWEEN '$min_price' AND '$max_price') 
  AND (orientation = '$orientation1' OR orientation = '$orientation2' OR orientation = '$orientation3')
  AND (size_diagonal BETWEEN '$size_min' AND '$size_max')
  AND (primary_color = '$primary_color' AND secondary_color = '$secondary_color')

我不确定为什么查询不会过滤结果。即使用户输入了任何一个字段，它也应该过滤结果。

Answer 1

您应该只使用用户选择的参数并从中构建查询。用户似乎可以将方向，大小和原色滤镜留空。

例如，如果$orientation1为空，则查询将返回零结果（前提是所有绘画都具有非空方向。

尝试使用较少的where子句运行查询，并验证是否获得了预期的结果。

Answer 2

SELECT DISTINCT * FROM paintings   WHERE (price BETWEEN '$min_price' AND '$max_price') 
                          AND (orientation = '$orientation1' OR orientation = '$orientation2' OR orientation = '$orientation3')
                          AND (size_diagonal BETWEEN '$size_min' AND '$size_max')
                          AND (primary_color = '$primary_color' AND secondary);

使用php和mysql过滤结果

2 个答案: