Question

如何使用集合过滤器实现以下目标？

SELECT * FROM products WHERE (name like '%blah%' and name like 
    '%yes%') or (description like '%blah%' and description like '%yes%');

或者出于某种原因这是不好的做法？

addFieldToFilter应用于集合执行AND，并且在每个集合中都可以实现OR，但这只允许：

(x OR y) AND (w OR z)

但不是

(x AND y) OR (w AND z)

我错过了什么吗？

Answer 1

不，我不相信你错过任何东西。我不久前遇到了类似的问题并使用getSelect()->where()来解决它。

从您的查询开始：

SELECT * FROM products WHERE (name like '%blah%' and name like 
'%yes%') or (description like '%blah%' and description like '%yes%');

首先，我创建了一个集合，并使用OR数组方法来获取查询。

$collection = Mage::getModel('catalog/product')->getCollection();
$collection->addFieldToFilter(array(
                              array('attribute' => 'name', 'like' => '%blah%'),
                              array('attribute' => 'name', 'like' => '%yes%')
                              ));
$collection->addFieldToFilter(array(
                              array('attribute' => 'description', 'like' => '%blah%'),
                              array('attribute' => 'description', 'like' => '%yes%')
                              ));
$collection->load(true); // To dump the sql as text

这导致以下输出：

SELECT `e`.*, IF(at_name.value_id > 0, at_name.value, at_name_default.value) AS `name`, IF(at_description.value_id > 0, at_description.value, at_description_default.value) AS `description` FROM `catalog_product_entity` AS `e` INNER JOIN `catalog_product_entity_varchar` AS `at_name_default` ON (`at_name_default`.`entity_id` = `e`.`entity_id`) AND (`at_name_default`.`attribute_id` = '96') AND `at_name_default`.`store_id` = 0 LEFT JOIN `catalog_product_entity_varchar` AS `at_name` ON (`at_name`.`entity_id` = `e`.`entity_id`) AND (`at_name`.`attribute_id` = '96') AND (`at_name`.`store_id` = 1) INNER JOIN `catalog_product_entity_text` AS `at_description_default` ON (`at_description_default`.`entity_id` = `e`.`entity_id`) AND (`at_description_default`.`attribute_id` = '97') AND `at_description_default`.`store_id` = 0 LEFT JOIN `catalog_product_entity_text` AS `at_description` ON (`at_description`.`entity_id` = `e`.`entity_id`) AND (`at_description`.`attribute_id` = '97') AND (`at_description`.`store_id` = 1) 
WHERE ((IF(at_name.value_id > 0, at_name.value, at_name_default.value) LIKE '%blah%') OR (IF(at_name.value_id > 0, at_name.value, at_name_default.value) LIKE '%yes%')) AND ((IF(at_description.value_id > 0, at_description.value, at_description_default.value) LIKE '%blah%') OR (IF(at_description.value_id > 0, at_description.value, at_description_default.value) LIKE '%yes%'))

您会注意到WHERE声明几乎就是您描述的地方，但OR和AND被撤消了。

我复制了查询的WHERE部分，并在集合中添加了额外的getSelect()->where()行，如下所示：

$collection = Mage::getModel('catalog/product')->getCollection();

// I added these lines to ensure that the collection would load 
// the fields and do the necessary joins to pull the data
$collection->addFieldToFilter('name');          
$collection->addFieldToFilter('description');

// I'm using the same WHERE statement but I have set the ANDs and ORs
// to match your requirements

$collection->getSelect()->where(" (IF(at_name.value_id > 0, at_name.value, at_name_default.value) LIKE '%blah%') AND (IF(at_name.value_id > 0, at_name.value, at_name_default.value) LIKE '%yes%')) OR ((IF(at_description.value_id > 0, at_description.value, at_description_default.value) LIKE '%blah%') AND (IF(at_description.value_id > 0, at_description.value, at_description_default.value) LIKE '%yes%')");

$collection->load(true); // To dump the sql as text again

结果输出为：

SELECT `e`.*, IF(at_name.value_id > 0, at_name.value, at_name_default.value) AS `name`, IF(at_description.value_id > 0, at_description.value, at_description_default.value) AS `description` FROM `catalog_product_entity` AS `e` INNER JOIN `catalog_product_entity_varchar` AS `at_name_default` ON (`at_name_default`.`entity_id` = `e`.`entity_id`) AND (`at_name_default`.`attribute_id` = '96') AND `at_name_default`.`store_id` = 0 LEFT JOIN `catalog_product_entity_varchar` AS `at_name` ON (`at_name`.`entity_id` = `e`.`entity_id`) AND (`at_name`.`attribute_id` = '96') AND (`at_name`.`store_id` = 1) INNER JOIN `catalog_product_entity_text` AS `at_description_default` ON (`at_description_default`.`entity_id` = `e`.`entity_id`) AND (`at_description_default`.`attribute_id` = '97') AND `at_description_default`.`store_id` = 0 LEFT JOIN `catalog_product_entity_text` AS `at_description` ON (`at_description`.`entity_id` = `e`.`entity_id`) AND (`at_description`.`attribute_id` = '97') AND (`at_description`.`store_id` = 1) 
WHERE (IF(at_name.value_id > 0, at_name.value, at_name_default.value) = '') AND (IF(at_description.value_id > 0, at_description.value, at_description_default.value) = '') AND ( (IF(at_name.value_id > 0, at_name.value, at_name_default.value) LIKE '%blah%') AND (IF(at_name.value_id > 0, at_name.value, at_name_default.value) LIKE '%yes%')) OR ((IF(at_description.value_id > 0, at_description.value, at_description_default.value) LIKE '%blah%') AND (IF(at_description.value_id > 0, at_description.value, at_description_default.value) LIKE '%yes%'))

where()中的getSelect()可以缩短为：

(`name` like '%blah%' and `name` like '%yes%') or (`description` like '%blah%' and `description` like '%yes%');

任何其他Magento人员请随时纠正我，如果我离这里太远，或者如果你知道如何在不使用这种方法的情况下实现同一目标。

HTH！

如何在Magento的OR条件中添加AND过滤器/条件？

1 个答案: