Question

我确实对数据库表有一点了解，但我无法读取db_query 我相信有一个查询应该将产品作为畅销书并将其放在滚动条中。我想伪造一本畅销书，因为在打开一个空畅销书清单的网店时看起来有点倾销。

我手动更改了表“products_ordered”并将产品列更改为3（就像产品订购了3次）仍然没有在滚动条中发生任何事情。接下来我该怎么办？

我做错了什么？

这是查询：

$best_sellers_scroll_query = tep_db_query("select distinct p.products_id, 
pd.products_description, p.products_image, p.products_price, 
p.products_tax_class_id, pd.products_name from " .              
TABLE_PRODUCTS . " p, " . 
    TABLE_PRODUCTS_DESCRIPTION . " pd, " . 
    TABLE_PRODUCTS_TO_CATEGORIES . " p2c, " . 
    TABLE_CATEGORIES . " c where p.products_status = '1' and 
p.products_ordered > 0 and p.products_id = pd.products_id and 
pd.language_id = '" . 
    (int)$languages_id . "' and p.products_id = p2c.products_id and 
p2c.categories_id = c.categories_id and '" . 
    (int)$current_category_id . "' in (c.categories_id, c.parent_id) 
order by p.products_ordered desc, pd.products_name limit " . 
MAX_DISPLAY_BESTSELLERS_SLIDER);

这是slider.js

  var prepare_slider = function(x_cols, x_dur){

      var x_pos = 0;
      var li_items_n = 0;   
      var li_col = $('slider_list').getElements('li');

      li_col.each(function(li, index){
          size = li.getSize();
          x_pos += size.x;
          li_items_n++;
      })

      $('slider_list').setStyle('position','relative');
      $('slider_list').setStyle('left','0px');
      $('slider_list').setStyle('width', x_pos+'px');
      /*  alert("The element is "+size.x);  */

      var myFx = new Fx.Tween($('slider_list'), {transition: 
Fx.Transitions.Sine.easeOut, duration:x_dur});
      myFx.addEvent('start', function(){ is_playing = true; });
      myFx.addEvent('complete', function(){ is_playing = false; });

      var is_playing = false;

      $('left').addEvent('click', function(){
          cur_offset = $('slider_list').getStyle('left').toInt();
          if (!is_playing && ((cur_offset + size.x) <= 0)) 
myFx.start('left',   cur_offset + size.x + 'px');
      });

      $('right').addEvent('click', function(){
          var is_playing = false;
          cur_offset = $('slider_list').getStyle('left').toInt();
          if (!is_playing && ((cur_offset - size.x) 
>= (x_cols*size.x-x_pos) )) myFx.start('left', cur_offset - size.x + 'px'); 
      });   
  }

转储的结果：

string(179) "4' and p.products_id = p2c.products_id 
and p2c.categories_id = c.categories_id and '0' in (c.categories_id, 
c.parent_id) order by p.products_ordered desc, 
pd.products_name limit 1" 1064 - 
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 ''0' at line 1

select distinct p.products_id, pd.products_description, 
p.products_image, p.products_price, p.products_tax_class_id, 
pd.products_name from products p, products_description pd, 
products_to_categories p2c, categories c where 
p.products_status = '1' and p.products_ordered > 0 and 
p.products_id = pd.products_id and pd.language_id = '0

[TEP STOP]

Answer 1

您必须检查查询找不到产品的原因：

找出您更改products_ordered列的位置（查找products_id）
检查该产品是否有products_status = 1
检查表格products_description中的条目是否与您当前语言的products_id和language_id相同（执行var_dump($languages_id)）
检查表products_to_categories中的条目是否与您当前类别的products_id和categories_id相同（执行var_dump($current_category_id)）
检查表categories
检查MAX_DISPLAY_BESTSELLERS_SLIDER > 0
将“WHERE”替换为“WHERE TRUE OR”

要改进哪个数据库表以在网上商店中拥有畅销产品？

1 个答案: