Question

我在Zen购物车中尝试创建连接和计数（然后按它设置顺序）时遇到了很多麻烦。

以下是代码：

echo $listing_sql = "select " . $select_column_list . " p.products_id, count(opc.products_id), p.products_type, p.master_categories_id, p.manufacturers_id, p.products_price, p.products_tax_class_id, pd.products_description, IF(s.status = 1, s.specials_new_products_price, NULL) as specials_new_products_price, IF(s.status =1, s.specials_new_products_price, p.products_price) as final_price, p.products_sort_order, p.product_is_call, p.product_is_always_free_shipping, p.products_qty_box_status
   from " . TABLE_PRODUCTS_DESCRIPTION . " pd, " .
   TABLE_PRODUCTS . " p left join " . TABLE_MANUFACTURERS . " m on p.manufacturers_id = m.manufacturers_id, " .
   TABLE_PRODUCTS_TO_CATEGORIES . " p2c left join " . TABLE_SPECIALS . " s on p2c.products_id = s.products_id
   join " . TABLE_ORDERS_PRODUCTS . " opc on opc.products_id = p.products_id
   where p.products_status = 1
     and p.products_id = p2c.products_id
     and pd.products_id = p2c.products_id
     and pd.language_id = '" . (int)$_SESSION['languages_id'] . "'
     and p2c.categories_id = '" . (int)$current_category_id . "'" .
     $alpha_sort . " ORDER BY count(opc.products_id)";

我想计算opc.products_id，然后在结尾处将其设置为ORDER BY count（opc.products_id）。不知道我哪里出错了，非常感谢！

科斯塔

Answer 1

很难不丢失代码，但是你需要做的事情：

1）创建一个查询，选择您想要的产品，只需不计数（opc.products_id）并立即进行排序。测试一下。所有产品每个应该只有一行（没有两面性），然后......

2）编辑代码，重点关注这三个突出显示的部分：

echo $listing_sql = "select " . $select_column_list . " p.products_id, count(opc.products_id), p.products_type, p.master_categories_id, p.manufacturers_id, p.products_price, p.products_tax_class_id, pd.products_description, IF(s.status = 1, s.specials_new_products_price, NULL) as specials_new_products_price, IF(s.status =1, s.specials_new_products_price, p.products_price) as final_price, p.products_sort_order, p.product_is_call, p.product_is_always_free_shipping, p.products_qty_box_status

,count(opc.products_id) as opc_count

from " . TABLE_PRODUCTS_DESCRIPTION . " pd, " .
TABLE_PRODUCTS . " p left join " . TABLE_MANUFACTURERS . " m on p.manufacturers_id = m.manufacturers_id, " .
TABLE_PRODUCTS_TO_CATEGORIES . " p2c left join " . TABLE_SPECIALS . " s on p2c.products_id = s.products_id

 join " . TABLE_ORDERS_PRODUCTS . " opc on opc.products_id = p.products_id

where p.products_status = 1
  and p.products_id = p2c.products_id
  and pd.products_id = p2c.products_id
  and pd.language_id = '" . (int)$_SESSION['languages_id'] . "'
  and p2c.categories_id = '" . (int)$current_category_id . "'" .
  $alpha_sort . "

 GROUP BY p.products_id ORDER BY opc_count ";

在Zen Cart中创建连接和COUNT（）

1 个答案: