I am a little confused about attributes whether they are simple eav attributes or not.

I dont fully understand when an attribute has option or option value. How can i check it?

So, for example in this case i am trying to obtain the brand name so i did this query:

SELECT main.sku, option_value_ez_catalog_product_brand.value AS ez_catalog_product_brand, code_status.value AS code_status
LEFT JOIN eav_attribute attribute_code_status ON attribute_code_status.attribute_code = 'status' and attribute_code_status.entity_type_id = 4
LEFT JOIN eav_attribute attribute_ez_catalog_product_brand ON attribute_ez_catalog_product_brand.attribute_code = 'ez_catalog_product_brand' and attribute_code_status.entity_type_id = 4

LEFT JOIN catalog_product_entity_int code_status ON main.entity_id = code_status.entity_id and code_status.attribute_id = attribute_code_status.attribute_id
LEFT JOIN catalog_product_entity_int ez_catalog_product_brand ON main.entity_id = ez_catalog_product_brand.entity_id and ez_catalog_product_brand.attribute_id = attribute_ez_catalog_product_brand.attribute_id
LEFT JOIN eav_attribute_option option_ez_catalog_product_brand on option_ez_catalog_product_brand.attribute_id = ez_catalog_product_brand.attribute_id and option_ez_catalog_product_brand.option_id = ez_catalog_product_brand.value
LEFT JOIN eav_attribute_option_value option_value_ez_catalog_product_brand on option_ez_catalog_product_brand.option_id = option_value_ez_catalog_product_brand.option_id

Is that okay? How can i know if an attribute is simple or not?

What about other attributes like : manufacturer, volume, description, prices and so on?

Could you please help me?

1 Answer 1


You can identify the type of an EAV attribute from its settings in the eav_attribute table:

backend_type = int means that the attribute is of type integer and the value is stored in the table [entity_type_code]_entity_int, in case of a product attribute from catalog_product_entity_int. (For other backend types there are corresponding tables, backend_type = varchar has catalog_product_entity_varchar etc. backend_type = static attributes are stored in the entity_table catalog_product_entity - e.g. sku).

If an integer attribute has frontend_type = select that means that some kind of integer key is stored in [entity_type_code]_entity_int and there is a related value to that key. For this type of attributes there is usually a setting in the source_model column. Attributes with option values usually have source_model = eav/entity_attribute_source_table. Other types of backend models store the data in other tables - where and how exatly the data is stored can be seen in the corresponding Magento class (i.e. in case of eav/entity_attribute_source_table Mage_Eav_Model_Entity_Attribute_Source_Table).

Regarding your select:

To get the option values of an product attribute with options you will have to join 4 tables: eav_attribute,catalog_product_entity_int,eav_attribute_option andeav_attribute_option_value and you will have to do that for every attribute. You may shortcut that by hardcoding the attribute_id in your statement and skip the table eav_attribute, but the other 3 tables need to be there.

Your statement is correct, you have just a little copy & paste error: In the second join you use attribute_code_status.entity_type_id = 4 instead of attribute_ez_catalog_product_brand.entity_type_id = 4.


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.