having 子句中的 Magento 未知列
Magento unknown column in having clause
我需要在 Magento 自定义集合网格中使用 having 子句，我尝试这样做：
$store = Mage::app()->getStore($this->getStore());
$collection = Mage::getResourceModel('catalog/product_collection')
->addAttributeToSelect('sku')
->addAttributeToSelect('name')
->addAttributeToSelect('small_image')
->addAttributeToFilter('status',1);
$collection->joinTable(array('table_url' => 'thebot_url'),"table_url.product_id = entity_id",
array(
"urls" => new Zend_Db_Expr('group_concat(table_url.url)'),
"competitor_price" => new Zend_Db_Expr('group_concat(table_url.competitor_price)'),
'rdy_shipping' => 'rdy_shipping',
'competitor_shipping_price' => 'competitor_shipping_price',
'min_sell_price' => new Zend_Db_Expr('min(ROUND((table_url.competitor_price + table_url.competitor_shipping_price),2))'),
'rdy_price' => new Zend_Db_Expr('round(((IF(at_price.value_id > 0, at_price.value, at_price_default.value)) + min(table_url.rdy_shipping)),2)')
), null,'left');
if ($store->getId())
{
$collection->addStoreFilter($store);
$collection->joinAttribute('custom_name', 'catalog_product/name', 'entity_id', null, 'inner', $store->getId());
$collection->joinAttribute('status', 'catalog_product/status', 'entity_id', null, 'inner', $store->getId());
$collection->joinAttribute('visibility', 'catalog_product/visibility', 'entity_id', null, 'inner', $store->getId());
$collection->joinAttribute('price', 'catalog_product/price', 'entity_id', null, 'left', $store->getId());
$collection->joinAttribute('manufacturer', 'catalog_product/manufacturer', 'entity_id', null, 'left', $store->getId());
}
else
{
$collection->addAttributeToSelect('price');
$collection->addAttributeToSelect('status');
$collection->addAttributeToSelect('manufacturer');
$collection->addAttributeToSelect('visibility');
}
$collection->addAttributeToFilter('visibility', array("neq" => 1));
$collection->getSelect()->group("e.entity_id");
$collection->getSelect()->having("rdy_price > min_sell_price AND min_sell_price > 0");
出现此错误：
Column not found: 1054 Unknown column 'rdy_price' in 'having clause'
sql查询是：
SELECT COUNT(DISTINCT e.entity_id) FROM `catalog_product_entity` AS `e`
INNER JOIN `catalog_product_entity_int` AS `at_status` ON (`at_status`.`entity_id` = `e`.`entity_id`) AND (`at_status`.`attribute_id` = '80') AND (`at_status`.`store_id` = 0)
INNER JOIN `catalog_product_website` AS `product_website` ON product_website.product_id = e.entity_id AND product_website.website_id = '10'
INNER JOIN `catalog_product_entity_varchar` AS `at_custom_name_default` ON (`at_custom_name_default`.`entity_id` = `e`.`entity_id`) AND (`at_custom_name_default`.`attribute_id` = '56') AND `at_custom_name_default`.`store_id` = 0
INNER JOIN `catalog_product_entity_int` AS `at_visibility_default` ON (`at_visibility_default`.`entity_id` = `e`.`entity_id`) AND (`at_visibility_default`.`attribute_id` = '85') AND `at_visibility_default`.`store_id` = 0
LEFT JOIN `catalog_product_entity_int` AS `at_visibility` ON (`at_visibility`.`entity_id` = `e`.`entity_id`) AND (`at_visibility`.`attribute_id` = '85') AND (`at_visibility`.`store_id` = '16') WHERE (at_status.value = '1') AND (IF(at_visibility.value_id > 0, at_visibility.value, at_visibility_default.value) != 1) HAVING (rdy_price > min_sell_price AND min_sell_price > 0)
那么为什么 magento 不将 table "table_url" 加入到这个请求中（我认为这是用来计算结果的）？
更新
简答
使用此代码：
$min_sell_price = 'min(ROUND((table_url.competitor_price + table_url.competitor_shipping_price),2))';
$rdy_price = 'round(((IF(at_price.value_id > 0, at_price.value, at_price_default.value)) + min(table_url.rdy_shipping)),2)';
$collection->getSelect()->having("{$rdy_price} > {$min_sell_price} AND {$min_sell_price} > 0");
说明
正在寻找答案...按照代码
首先查询失败的原因：
查询中没有GROUP BY，但是有一个HAVING。
非常可疑。
起初我认为你的代码应该更像下面这样，而 $collection->getSelect() 部分看起来被覆盖了。
$collection->getSelect()->group("e.entity_id")->having("rdy_price > min_sell_price AND min_sell_price > 0");
实际上，更多的研究表明，不是您提供的查询让您失败，而是 Magento 的内置 getSelectCountSql().
寻找另一个人
post 关于 problems with GROUP BY HAVING on a Magento Collection 的人似乎有同样的问题。
他的解决方案是扩展 getSelectCountSql()
I have created an extended getSelectCountSql() in the custom collection class that adds back in the missing column required for the having statement.
public function getSelectCountSql()
{
$countSelect = parent::getSelectCountSql();
// Adding some custom features
[...]
}
回源
我们要跟踪方法：Varien_Db_Select::getSelectCountSql()。 Luckily for us, someone already did this for us.
Loading a collection with HAVING works fine, but if you are using this in grid context, Magento might call getSelectCountSql() on the collection to get a modified query to retrieve the number of results.
I don't know why this is not included in the default implementation, but essentially it means you cannot use HAVING with calculated columns but must repeat the expression:
原版post
也许你应该看看这个类似的 topic about joinTable
尤其是以下部分 - 为什么我认为您的查询不起作用：
- Table is easy, it is the magento
namespace/entity format, which you use in your configuration, resource models and the collection. You can use an array of the format array('alias' => 'namespace/entity')
我担心你的 table thebot_url 是一个习惯 table。所以你需要添加一个资源模型。
这是将其添加到模块的示例
<?xml version="1.0"?>
<config>
...
<!-- The module you are using this query on -->
<global>
...
<models>
<thebot_url>
<class>Custom_TheBotUrl_Model</class>
<resourceModel>thebot_url_mysql4</resourceModel>
</thebot_url>
<thebot_url_mysql4>
<class>Custom_TheBotUrl_Model_Mysql4</class>
<entities>
<myfirsttable>
<table>thebot_url</table>
</myfirsttable>
</entities>
</thebot_mysql4>
</models>
...
</global>
...
</config>
所以现在你有一个命名空间 thebot_url 和一个实体 myfirsttable，这将导致 magento 选择 <table>thebot_url</table>
总而言之：在本例中，joinTable() 的第一个参数 ($table) 将是 thebot_url/myfirsttable
有关更多详细信息，您可能需要阅读这篇关于 creating a custom module with a custom table for Magento 的文章。
我需要在 Magento 自定义集合网格中使用 having 子句，我尝试这样做：
$store = Mage::app()->getStore($this->getStore());
$collection = Mage::getResourceModel('catalog/product_collection')
->addAttributeToSelect('sku')
->addAttributeToSelect('name')
->addAttributeToSelect('small_image')
->addAttributeToFilter('status',1);
$collection->joinTable(array('table_url' => 'thebot_url'),"table_url.product_id = entity_id",
array(
"urls" => new Zend_Db_Expr('group_concat(table_url.url)'),
"competitor_price" => new Zend_Db_Expr('group_concat(table_url.competitor_price)'),
'rdy_shipping' => 'rdy_shipping',
'competitor_shipping_price' => 'competitor_shipping_price',
'min_sell_price' => new Zend_Db_Expr('min(ROUND((table_url.competitor_price + table_url.competitor_shipping_price),2))'),
'rdy_price' => new Zend_Db_Expr('round(((IF(at_price.value_id > 0, at_price.value, at_price_default.value)) + min(table_url.rdy_shipping)),2)')
), null,'left');
if ($store->getId())
{
$collection->addStoreFilter($store);
$collection->joinAttribute('custom_name', 'catalog_product/name', 'entity_id', null, 'inner', $store->getId());
$collection->joinAttribute('status', 'catalog_product/status', 'entity_id', null, 'inner', $store->getId());
$collection->joinAttribute('visibility', 'catalog_product/visibility', 'entity_id', null, 'inner', $store->getId());
$collection->joinAttribute('price', 'catalog_product/price', 'entity_id', null, 'left', $store->getId());
$collection->joinAttribute('manufacturer', 'catalog_product/manufacturer', 'entity_id', null, 'left', $store->getId());
}
else
{
$collection->addAttributeToSelect('price');
$collection->addAttributeToSelect('status');
$collection->addAttributeToSelect('manufacturer');
$collection->addAttributeToSelect('visibility');
}
$collection->addAttributeToFilter('visibility', array("neq" => 1));
$collection->getSelect()->group("e.entity_id");
$collection->getSelect()->having("rdy_price > min_sell_price AND min_sell_price > 0");
出现此错误：
Column not found: 1054 Unknown column 'rdy_price' in 'having clause'
sql查询是：
SELECT COUNT(DISTINCT e.entity_id) FROM `catalog_product_entity` AS `e`
INNER JOIN `catalog_product_entity_int` AS `at_status` ON (`at_status`.`entity_id` = `e`.`entity_id`) AND (`at_status`.`attribute_id` = '80') AND (`at_status`.`store_id` = 0)
INNER JOIN `catalog_product_website` AS `product_website` ON product_website.product_id = e.entity_id AND product_website.website_id = '10'
INNER JOIN `catalog_product_entity_varchar` AS `at_custom_name_default` ON (`at_custom_name_default`.`entity_id` = `e`.`entity_id`) AND (`at_custom_name_default`.`attribute_id` = '56') AND `at_custom_name_default`.`store_id` = 0
INNER JOIN `catalog_product_entity_int` AS `at_visibility_default` ON (`at_visibility_default`.`entity_id` = `e`.`entity_id`) AND (`at_visibility_default`.`attribute_id` = '85') AND `at_visibility_default`.`store_id` = 0
LEFT JOIN `catalog_product_entity_int` AS `at_visibility` ON (`at_visibility`.`entity_id` = `e`.`entity_id`) AND (`at_visibility`.`attribute_id` = '85') AND (`at_visibility`.`store_id` = '16') WHERE (at_status.value = '1') AND (IF(at_visibility.value_id > 0, at_visibility.value, at_visibility_default.value) != 1) HAVING (rdy_price > min_sell_price AND min_sell_price > 0)
那么为什么 magento 不将 table "table_url" 加入到这个请求中（我认为这是用来计算结果的）？
更新
简答
使用此代码：
$min_sell_price = 'min(ROUND((table_url.competitor_price + table_url.competitor_shipping_price),2))';
$rdy_price = 'round(((IF(at_price.value_id > 0, at_price.value, at_price_default.value)) + min(table_url.rdy_shipping)),2)';
$collection->getSelect()->having("{$rdy_price} > {$min_sell_price} AND {$min_sell_price} > 0");
说明
正在寻找答案...按照代码
首先查询失败的原因：
查询中没有GROUP BY，但是有一个HAVING。
非常可疑。
起初我认为你的代码应该更像下面这样，而 $collection->getSelect() 部分看起来被覆盖了。
$collection->getSelect()->group("e.entity_id")->having("rdy_price > min_sell_price AND min_sell_price > 0");
实际上，更多的研究表明，不是您提供的查询让您失败，而是 Magento 的内置 getSelectCountSql().
寻找另一个人
post 关于 problems with GROUP BY HAVING on a Magento Collection 的人似乎有同样的问题。
他的解决方案是扩展 getSelectCountSql()
I have created an extended getSelectCountSql() in the custom collection class that adds back in the missing column required for the having statement.
public function getSelectCountSql()
{
$countSelect = parent::getSelectCountSql();
// Adding some custom features
[...]
}
回源
我们要跟踪方法：Varien_Db_Select::getSelectCountSql()。 Luckily for us, someone already did this for us.
Loading a collection with
HAVINGworks fine, but if you are using this in grid context, Magento might callgetSelectCountSql()on the collection to get a modified query to retrieve the number of results.I don't know why this is not included in the default implementation, but essentially it means you cannot use HAVING with calculated columns but must repeat the expression:
原版post
也许你应该看看这个类似的 topic about joinTable
尤其是以下部分 - 为什么我认为您的查询不起作用：
- Table is easy, it is the magento
namespace/entityformat, which you use in your configuration, resource models and the collection. You can use an array of the format array('alias' => 'namespace/entity')
我担心你的 table thebot_url 是一个习惯 table。所以你需要添加一个资源模型。
这是将其添加到模块的示例
<?xml version="1.0"?>
<config>
...
<!-- The module you are using this query on -->
<global>
...
<models>
<thebot_url>
<class>Custom_TheBotUrl_Model</class>
<resourceModel>thebot_url_mysql4</resourceModel>
</thebot_url>
<thebot_url_mysql4>
<class>Custom_TheBotUrl_Model_Mysql4</class>
<entities>
<myfirsttable>
<table>thebot_url</table>
</myfirsttable>
</entities>
</thebot_mysql4>
</models>
...
</global>
...
</config>
所以现在你有一个命名空间 thebot_url 和一个实体 myfirsttable，这将导致 magento 选择 <table>thebot_url</table>
总而言之：在本例中，joinTable() 的第一个参数 ($table) 将是 thebot_url/myfirsttable
有关更多详细信息，您可能需要阅读这篇关于 creating a custom module with a custom table for Magento 的文章。