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Mongo - Fetch results sorted by the number of matching values in an array object

I have a mongo Database with collections such as : [{ _id : 'one', tags1 : ['A', 'B', 'C'], tags2 : ['D', 'E', 'F'] },{ _id : 'two', tags1 : ['A', 'Z'], tags2 : ['D', 'F', 'G', 'M'] } ...
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1answer
40 views

Type with nested table in oracle

I want to create a type with a nested table. I have a table called assignment_tbl which I want to put a type assignment_status. This assignment_status contains primitive types but also contains a ...
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2answers
36 views

Aggregating results of two database views in one database view

I have a view with name of UserInfo like this: And another view with name of UserRoleInfo like this: I want to aggregate all the records of the two views for one user name like H.F into ...
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0answers
109 views

Select the top N products from each category, but where the merchant hasn't already been picked

this isn't the usual Select top N results from each category question - there's a little bit more to it. I have the Select top N query as follows: SELECT tmp.id, tmp.name, tmp.category_id, ...
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2answers
309 views

I have multiple sources INSERTing into a MySQL innodb table. My periodic aggregation script never makes accurate aggregates. Why?

I apologize in advance if this is a repeat. I'm not really sure how to properly ask for what I'm running into. I have a large InnoDB table set up. I have 3 sources that all INSERT concurrently at a ...
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1answer
204 views

MongoDB: Aggregation workaround by helper collection

Since I regularly run against mongodb's document size limit and also aggregation framework's group limitations >16M, depending on the amount of data I need to process, I look for a simple workaround. ...
2
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1answer
477 views

Performing aggregations and calculations: SQL (CTE) vs MDX

I’ve hit a wall and would like some expert advice. I’m building a data warehouse and don’t quite understand whether the calculations (also time aggregations) should be done in SQL (T-SQL and CTE) or ...
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4answers
3k views

Should I use the Infobright database or is there a better aggregation solution?

We are a MySQL front-end shop and have a system currently logging event data in a highly structured format. Think apache traffic log. We need to be able to aggregate counts of this data (cube) vis a ...