aggregate database - Advanced - Data BasyX

Aggregating database table cell values by similar cell values?

I have the following table in my MySQL database

id, company_id, model_id, amount
1, 2, 3, 7
2, 2, 5, 5
3, 2, 3, 1

What I want to do is sum the amounts where the company_id and model_id are the same. For


CV's answer whould work fine if you have no other criteria. If you do, then either WHERE or HAVING clauses (or both) can further refine the result. For example, if you only want to list sums resulting from multiple rows (in your example, for 2-3 but not

How Low Can Vanguard Go? Sector ETFs Get Expense Cuts

Each of the funds highlighted above will now be at least tied for the lowest expense ratio in their respective ETFdb Categories , except for VFH. There are two ETFs in the Financials Equities ETFdb Category that beat the Vanguard ETF in terms of fees; the Financial SPDR (XLF) comes in at 0.20%, while the Focus Morningstar Financial Services Index ETF (FFL) comes in at just 0.19%

Sector SPDRs On Alert?

Though Vanguard is one of the largest issuers of ETFs in the world, its sector-specific funds are considerably smaller than some of their most direct competitors. VDE has a healthy $1.7 billion in AUM, but that’s only about a quarter of what the Energy SPDR (XLE) boasts. Currently, the nine Sector SPDRs have about $45 billion in aggregate AUM. Vanguard’s lineup of sector ETFs represents less than $10 billion in total. 

Vanguard’s ETF presence grew considerably in 2011, thanks in large part to the cost efficiency of several popular products compared to more established competitors. Perhaps the best example of increased cost awareness among ETF investors is the comparison between Vanguard’s MSCI Emerging Markets ETF ( VWO ) and iShares MSCI Emerging Markets Index Fund ( EEM )–both of which are linked to the same index. At the end of 2009, EEM’s asset base exceeded VWO by approximately $20 billion. Since then, inflows to VWO have skyrocketed while EEM has experienced net outflows; the Vanguard fund now has close to $10 billion more in assets than its older and more established competitor. 

Database Queries - Calculated Fields, Expression Builder, Aggregate Functions

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aggregate database - Bookshelf


Database and expert systems applications, 7th International Conference, DEXA '96, Zurich, Switzerland, September 9-13, 1996 : proceedings
921 pages
Database and expert systems applications, 7th International Conference, DEXA '96, Zurich, Switzerland, September 9-13, 1996 : proceedings

A System for the Management of Aggregate Data Leonardo Tininini, ... declarative query language to retrieve data from the aggregate database, called ADQUEL. ...

Repairing and Querying Databases Under Aggregate Constraints
61 pages
Repairing and Querying Databases Under Aggregate Constraints

Research has deeply investigated several issues related to the use of integrity constraints on relational databases.

Multidimensional databases, problems and solutions
443 pages
Multidimensional databases, problems and solutions

The role they play in a multidimensional aggregate database is also discussed. Then, we present the process which makes it possible to obtain aggregate data ...

Statistical Yearbook For Asia And The Pacific 2009
254 pages
Statistical Yearbook For Asia And The Pacific 2009

Aggregates: Calculated by ESCAP as the sum of individual country values. Source: UNSD, National Accounts Main Aggregates Database. Online database accessed ...

Database programming languages, 10th International Sympsosium, DBPL 2005, Trondheim, Norway, August 28-29, 2005 : revised selected papers
294 pages
Database programming languages, 10th International Sympsosium, DBPL 2005, Trondheim, Norway, August 28-29, 2005 : revised selected papers

The problem of extracting consistent information from re- onal databases ... ie integrity constraints defined on aggregate valeted from the database. ...

aggregate database - News


Research and Markets: Australia Regional Wealth Markets Database 2010
The first of its kind, this database sizes the potential affluent client base across all the states and territories of Australia, presenting the number of individuals and the aggregate onshore liquid assets they hold from 2005-9 and forecasted to 2014.

FTC to take a closer look at debt collectors' use of high-tech tools
Changes in database technologies have dramatically enhanced the ability of debt collectors to aggregate disparate pieces of information about consumers, thus making it cheaper and easier to locate and contact consumers." The FTC has stated in the past

Licensing Authorities
These bodies also have additional responsibilities for harmonisation of aggregate extraction licensing and all relevant data and information management. Together with these licensing authorities a database of current extraction licenses is maintained

Google stands up Japan earthquake crisis response site
While there, he began a career in health and educational information systems, with a focus on clinical trials and related statistical programming and database modeling. This focus led him to several positions at Johns Hopkins, then to a large biotech

Database101 Announces Plans to Compile the Finest Business Database
On Tuesday, Vinod Gupta, founder of InfoUSA, and co-founder and chief executive of Database101, unveiled plans for a US business and executive database compilation, including future plans to aggregate real-time data aggregating programs that are