entity-attribute-value

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saving and retrieving from EAV table structure using polymorphism

I have an attribute table like the following Attributes attributeidbackendtypecodedisplayname 1intsizeProduct Size[详细]

2023-01-18 14:56 分类：问答
Examples of EAV pattern in .NET

I\'ve been reviewing the archi开发者_如何学Pythontecture of Magento Commerce today and am intrigued by their use of EAV to create a very flexible model.[详细]

2023-01-15 05:01 分类：问答
magento select attribute by using where condition

$attributeInfo = Mage::getResourceModel(\'eav/entity_attribute_collection\') ->setCodeFilter(\'modellijn\')[详细]

2023-01-14 10:04 分类：问答
Records with extra properties: sparse table or EAV?

I have a model that already has a couple dozen of columns that will be filled most of the time. Now I need to add fields that might be different each time.[详细]

2023-01-11 09:21 分类：问答
What is an efficient way to query against an entity-attribute-value model

I\'m working with a database set up like this: entity fieldvalue 1start_dateJune 1, 2010 1end_dateAugust 30, 2010[详细]

2023-01-10 06:43 分类：问答
How can I combine the awesomness of SQLAlchemy and EAV DB schemas?

I\'ve been doing some work with Pylons recently and quite like the SQLAlchemy model for database interaction. There\'s one section of my website though which I think could benefit from an EAV schema.[详细]

2023-01-10 04:40 分类：问答
Oracle: How do I grab a default value when a more specific value is null from within the same query?

That title is brutal, but I don\'t know how else to put it. I have a key value table tied to a user_id that stores user preferences throughout the site.If a user hasn\'t gone in and updated any of th[详细]

2023-01-08 11:57 分类：问答
MYSQL query help (EAV Table)

I have the following query to retrieve customers who answer YES to a particular question \"OR\" NO to another question.[详细]

2023-01-07 13:01 分类：问答
SQL - how to select all related rows with external (?) conditions

I have three tables: player [id, name] attribute [id, name] player_attribute [id, player_id, attribute_id, value][详细]

2023-01-05 08:31 分类：问答
SQL SELECT criteria in another table

I have 2 related tables: messages -------- mid subject --- ----------------- 1Hello world 2Bye world 3The third message[详细]

2023-01-05 03:03 分类：问答