Question

SELECT
* 
FROM
fuu AS main_table 
INNER JOIN
(
 SELECT
    created_at AS last_order_date,
    base_cost AS base_cost 
 FROM
    foo 
 WHERE
    product_id = main_table.product_id )LEFT JOIN
 (
 SELECT
    retail_nxt_qty 
 FROM
    faa
 WHERE
    product_id = main_table.product_id 
)
LEFT JOIN
catalog_product_entity_varchar AS cpev_abc 
ON (cpev_abc.entity_id = main_table.product_id 
AND cpev_abc.attribute_id = 413) 
LEFT JOIN
catalog_product_entity_varchar AS cpev_name 
ON (cpev_name.entity_id = main_table.product_id 
AND cpev_name.attribute_id = 71)

具有magento集合的旧代码导致加载时间超过300秒，从而导致504。

$collection = Mage::getModel('fuu')->getCollection();
$collection->join( array('stock_item'=> 'faa'), 'stock_item.product_id = main_table.product_id', 'retail_nxt_qty');
$collection->join( array('order_item'=> 'foo'), 'order_item.product_id = main_table.product_id', 'base_cost');
$collection->join( array('product'=> 'fii'), 'product.entity_id = main_table.product_id', null);

$collection->getSelect()
->joinLeft(
    array('cpev_abc' => 'catalog_product_entity_varchar'), 
    '(cpev_abc.entity_id = main_table.product_id AND cpev_abc.attribute_id = '. $abcInventory. ')',
        array('abc_inventory' => 'value')
);

$collection->getSelect()
->joinLeft(
    array('cpev_name' => 'catalog_product_entity_varchar'), 
    'cpev_name.entity_id=main_table.product_id AND cpev_name.attribute_id='.$productName.'', 
    array('name' => 'value')
);

$collection->addFieldToSelect(new Zend_Db_Expr('MAX(order_item.created_at) AS last_order_date'));
$collection->addExpressionFieldToSelect('cost_price', 'AVG(order_item.base_cost * stock_item.retail_nxt_qty)', array('cost_price' => 'cost_price'));
$collection->getSelect()->group('order_item.product_id');

我希望获得与以前相同的结果，只是比以前的代码要快，所以我不会得到5分钟的加载时间。我知道我在新代码中缺少组函数，但是我希望它首先起作用。

这将返回以下sql：

SELECT
MAX(order_item.created_at) AS last_order_date,
`stock_item`.`retail_nxt_qty`,
`order_item`.`base_cost`,
`cpev_abc`.`value` AS `abc_inventory`, 
`cpev_name`.`value` AS `name`,
AVG(order_item.base_cost * stock_item.retail_nxt_qty) AS `cost_price` 
FROM 
`fuu` AS `main_table` 
INNER JOIN
`faa` AS `stock_item` 
ON stock_item.product_id = main_table.product_id 
INNER JOIN
`foo` AS `order_item` 
ON order_item.product_id = main_table.product_id 
INNER JOIN
`catalog_product_entity` AS `product` 
ON product.entity_id = main_table.product_id 
LEFT JOIN
`catalog_product_entity_varchar` AS `cpev_abc` 
ON (cpev_abc.entity_id = main_table.product_id 
AND cpev_abc.attribute_id = 413) 
LEFT JOIN
`catalog_product_entity_varchar` AS `cpev_name` 
ON cpev_name.entity_id = main_table.product_id 
AND cpev_name.attribute_id = 71 
GROUP BY
`order_item`.`product_id`

检查与您的MySQL服务器版本相对应的手册以在''附近使用正确的语法

0 个答案: