I have this mysql query that I am trying to analyze. It is very slow, the visitor table here is about 50K entries, this query never returns. When I tried an explain statement, I found out that the ind
I understand the three basic failures in EAV, namely that it takes a lot of work to reassemble the data.However, I want a database where I can add custom fields.A lot of people say that Virtuemart all
i hope you can help me with the resolution of this task we have. originally we have these tables: hwtype
I want to modify one attribute of my product automatically (code). How could i do that plz? I have seen how to show one attribu开发者_如何学Pythonte, but not how to modify.
What is the best way to export data from multiple tables in MySQL. I\'m basically working with product details. Say a product has 150 attributes of data.How can I export that in a single row and then
How are开发者_JAVA技巧 others using relational modeling tools to map a logical model or one in third normal form to a database that uses EAV?EAV is a non-relational design.You can\'t achieve any norma
Excuse the poor title, i can not think of the correct term. I have a database structure that represents objects, objects have types and properties.
We have a common database schema that we use for some tables in our system.Them main reason is that we are running a multi-tenant database so not all of our users require the same fields.However, I do
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