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...certain number of any given product. There are four products, each in a different table because they have completely different attributes. So I have: Order - has many LineItems LineItem - belongs to an Order - holds the quantity of the particular product - has one {ProductA or ProductB or ProductC or ProductD} ProductA - belongs to many LineItems - holds various attributes unique to product A ProductB - belongs to many LineItems - holds various attributes unique to product B ...etc for ProductC and ProductB How do I set up LineItem so it is polymorphic with respec...

I have a Merchant class that has many Products. Product is an abstract class which has many subclasses (ProductA, ProductB, etc). All Products have common data, like ''name'', ''status'', ''created_on'', etc... but they also have some completely different properties. It seems like Active Record only supports Single Table Inheritance. This would make my Products'&...

Hi, 1) I have noticed that when I use the aggregate function it outputs numbers in the results. for example: aggregate by product group.1 Aggregate 1 ProductA 1000400.00 2 ProductB 23232323.00 3 Missing 232323.00 is there a way to suppress the numbers infront of aggregate outputs. I checked and they don't look like columns when I do a summary so I can't -1 them away. 2) is there an easy way to then take my aggregate matrix and then format the sum wtih $ a...

...p@R-project.org Message-ID: <20080921180352.6760@web005.roc2.bluetie.com> Content-Type: text/plain Hi, 1) I have noticed that when I use the aggregate function it outputs numbers in the results. for example: aggregate by product group.1 Aggregate 1 ProductA 1000400.00 2 ProductB 23232323.00 3 Missing 232323.00 is there a way to suppress the numbers infront of aggregate outputs. I checked and they don't look like columns when I do a summary so I can't -1 them away. 2) is there an easy way to then take my aggregate matrix and then format the sum wtih $ a...