在Zen Cart中创建加入和COUNT（）

Question

在Zen购物车中尝试创建连接并计数（然后设置顺序）时遇到了很多麻烦。

下面的代码：

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)"; 

我想算opc.products_id，然后将其设置为ORDER BY在结束计数（opc.products_id）。不知道我哪里错了，非常感谢！

科斯塔

Answer 1

很难不迷失在你的代码，但你需要做的事情：

1）让像你想的是选择产品，只是没有计数（opc.products_id查询）和现在排序。测试它。所有产品应该只有一个排的每个（不口是心非），然后...

2）重点编辑代码在这三个突出部分：

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 ";