Click here to close now.




















Welcome!

Article

Solving a JOIN Computation by SQL and esProc

How to Facilitate Relational Reference: Generic, Sequence, and Table Sequence

Based on the generic data type, esProc provides the sequence and the Table Sequence for implementing the complete set-lizing and the much more convenient relational queries.

esProc

 

The relation between the department and the employee is one-to-many and that between the employee and the SSN (Social Security Number) is one-to-one. Everything is related to everything else in the world. The relational query is the access to relational dataset with the mathematical linguistics. Thanks to the associated query, the relational database (RDBMS) is extensively adopted.

I Case and Comparison

Case

There is a telecommunications enterprise that needs to perform this analysis: to find out the annual outstanding employees whose line manager having been awarded the president honor. The data are from two tables: the first is the department table mainly consisting of deptName and manager fields; and the second is the employee table mainly consisting of the empName, empHonor, and empDept fields;

For empHonor, three kinds of values can be obtained: First, null value; Second, "president's award" and PA for short; Third, "employee of the year" and EOY for short; The corresponding relations are usually belong to either of the two below groups: empDept & deptName, and Manager & empName.

SQL Solution

SELECT A.*

FROM employee A,department B,employee C

WHERE A.empDept=B.deptName AND B.manager=C.empName AND A.empHonor=‘EOY' AND C.empHornor=‘PA'

Complex SQL JOIN query can be used to solve such problems. In this case, we choose the nested query that is brief and clear. The association statements after "where" have established one-to-many relation between deptName and empDept, and the one-to-one relation between manager and empName.

esProc Solution

employee.select(empHonor:"EOY",empDept.manager.empHornor:"PA")

The esProc solution is quite intuitive: select the employees with EOY on condition that the line respective managers of these employees have won the "PA".

Comparison

Regarding the SQL solution, the SQL statements is lengthy and not intuitive. Actually, the complete associated query statement is "inner join...on...". We have put it in a rather simplified way or the statements would be even harder to comprehend.

Regarding the esProc solution, the esProc fields are of generic type, which can point to any data and dataset. Therefore, you can simply use "." symbol to access the associated table directly. By representing in such intuitive and easy-to-understand way, esProc users can convert the complicated and lengthy SQL statement for multiple table association to the simple object access. This is unachievable if using SQL.

II Function Description:

Generic Data Type

The data in esProc are all of generic type, that is, the data types are not strictly distinguished. Therefore, a data can be a simple data like "1" or "PA" ,or a set like [1," PA"], or a set composed of sets like the database records.

Sequence

esProc

A sequence is a data structure specially designed for the mass data analysis. It is similar to the concept of "array + set" in the senior language. That is to say, esProc users can assess members of any type according to its serial number, and perform the intersection, union, and complementary set operations on these members. The sequence is characterized with two outstanding features: generic type, and being ordered.

For example, let's suppose that the sequence A is a set of line managers, and the sequence B is a set of award-winning employees. Then, the award-winning departments can be computed as a result of A^B. The top three departments can be obtained as a result of [1,2,3] (Please refer to other documents for the characteristics of being ordered).

esProc provides a great many of easy-to-use functions for sequence. The analysis will be greatly simplified if you grasped the use of sequence well.

Table Sequence

The Table Sequence is a sequence of database structure. As a sequence, it is characterized by being generic and ordered. In addition, Table Sequence also inherited the concept of database table that allows for the access to data with the field and the record.

esProc

The characteristics of generic type allow for the associated query in a quite convenient way in which the access to the record of associated table is just like the access to object. For example, to access the line manager of a certain employee, you can just compose "empDept.manager". By comparison, the counterpart SQL syntax requires quite lots of wieldy association statements: "from...where..." or "left outer/right outer/inner join...on..."

Moreover, the characteristics of being ordered are quite useful and convenient for solving the tough computational problems relating to the Table Sequence and serial numbers, such as computing the top N, year-on-year statistics, and link relative ratio analysis.

III Advantages

The Access Syntax to Convert Complexity to Simplicity

esProc users can use "." to access the record in the associated table. Compared with the lengthy and complicated association syntax of SQL, such access method and style is much easier.

Intuitive Analysis is Ideal for Business Specialist

Analyzing from the business aspect, the business specialist can reach the result more correctly and rapidly. esProc users can access to the associated data in an intuitive way following the business descriptions and thus it is ideal for business specialist.

Easy to Analyze and Solve Problem

The sequence and table sequence of esProc is fit for processing the mass data. Even for the complicated multiple-table association, esProc users can solve the problems conveniently in the process of data analysis.

About esProc: http://www.raqsoft.com/product-esproc

More Stories By Jessica Qiu

Jessica Qiu is the editor of Raqsoft. She provides press releases for data computation and data analytics.

Latest Stories
With major technology companies and startups seriously embracing IoT strategies, now is the perfect time to attend @ThingsExpo in Silicon Valley. Learn what is going on, contribute to the discussions, and ensure that your enterprise is as "IoT-Ready" as it can be! Internet of @ThingsExpo, taking place Nov 3-5, 2015, at the Santa Clara Convention Center in Santa Clara, CA, is co-located with 17th Cloud Expo and will feature technical sessions from a rock star conference faculty and the leading in...
The 3rd International WebRTC Summit, to be held Nov. 4–6, 2014, at the Santa Clara Convention Center in Santa Clara, CA, announces that its Call for Papers is now open. Topics include all aspects of improving IT delivery by eliminating waste through automated business models leveraging cloud technologies. WebRTC Summit is co-located with 15th International Cloud Expo, 6th International Big Data Expo, 3rd International DevOps Summit and 2nd Internet of @ThingsExpo. WebRTC (Web-based Real-Time Com...
WebRTC has had a real tough three or four years, and so have those working with it. Only a few short years ago, the development world were excited about WebRTC and proclaiming how awesome it was. You might have played with the technology a couple of years ago, only to find the extra infrastructure requirements were painful to implement and poorly documented. This probably left a bitter taste in your mouth, especially when things went wrong.
Organizations from small to large are increasingly adopting cloud solutions to deliver essential business services at a much lower cost. According to cyber security experts, the frequency and severity of cyber-attacks are on the rise, causing alarm to businesses and customers across a variety of industries. To defend against exploits like these, a company must adopt a comprehensive security defense strategy that is designed for their business. In 2015, organizations such as United Airlines, Sony...
ElasticBox, the agile application delivery manager, announced freely available public boxes for the DevOps community. ElasticBox works with enterprises to help them deploy any application to any cloud. Public boxes are curated reference boxes that represent some of the most popular applications and tools for orchestrating deployments at scale. Boxes are an adaptive way to represent reusable infrastructure as components of code. Boxes contain scripts, variables, and metadata to automate proces...
Through WebRTC, audio and video communications are being embedded more easily than ever into applications, helping carriers, enterprises and independent software vendors deliver greater functionality to their end users. With today’s business world increasingly focused on outcomes, users’ growing calls for ease of use, and businesses craving smarter, tighter integration, what’s the next step in delivering a richer, more immersive experience? That richer, more fully integrated experience comes ab...
Containers are not new, but renewed commitments to performance, flexibility, and agility have propelled them to the top of the agenda today. By working without the need for virtualization and its overhead, containers are seen as the perfect way to deploy apps and services across multiple clouds. Containers can handle anything from file types to operating systems and services, including microservices. What are microservices? Unlike what the name implies, microservices are not necessarily small,...
The 17th International Cloud Expo has announced that its Call for Papers is open. 17th International Cloud Expo, to be held November 3-5, 2015, at the Santa Clara Convention Center in Santa Clara, CA, brings together Cloud Computing, APM, APIs, Microservices, Security, Big Data, Internet of Things, DevOps and WebRTC to one location. With cloud computing driving a higher percentage of enterprise IT budgets every year, it becomes increasingly important to plant your flag in this fast-expanding bu...
The 5th International DevOps Summit, co-located with 17th International Cloud Expo – being held November 3-5, 2015, at the Santa Clara Convention Center in Santa Clara, CA – announces that its Call for Papers is open. Born out of proven success in agile development, cloud computing, and process automation, DevOps is a macro trend you cannot afford to miss. From showcase success stories from early adopters and web-scale businesses, DevOps is expanding to organizations of all sizes, including the ...
SYS-CON Events announced today that the "Second Containers & Microservices Expo" will take place November 3-5, 2015, at the Santa Clara Convention Center in Santa Clara, CA. Containers and microservices have become topics of intense interest throughout the cloud developer and enterprise IT communities.
In his session at @ThingsExpo, Lee Williams, a producer of the first smartphones and tablets, will talk about how he is now applying his experience in mobile technology to the design and development of the next generation of Environmental and Sustainability Services at ETwater. He will explain how M2M controllers work through wirelessly connected remote controls; and specifically delve into a retrofit option that reverse-engineers control codes of existing conventional controller systems so the...
DevOps Summit, taking place Nov 3-5, 2015, at the Santa Clara Convention Center in Santa Clara, CA, is co-located with 17th Cloud Expo and will feature technical sessions from a rock star conference faculty and the leading industry players in the world. The widespread success of cloud computing is driving the DevOps revolution in enterprise IT. Now as never before, development teams must communicate and collaborate in a dynamic, 24/7/365 environment. There is no time to wait for long development...
Akana has announced the availability of the new Akana Healthcare Solution. The API-driven solution helps healthcare organizations accelerate their transition to being secure, digitally interoperable businesses. It leverages the Health Level Seven International Fast Healthcare Interoperability Resources (HL7 FHIR) standard to enable broader business use of medical data. Akana developed the Healthcare Solution in response to healthcare businesses that want to increase electronic, multi-device acce...
Mobile, social, Big Data, and cloud have fundamentally changed the way we live. “Anytime, anywhere” access to data and information is no longer a luxury; it’s a requirement, in both our personal and professional lives. For IT organizations, this means pressure has never been greater to deliver meaningful services to the business and customers.
In 2014, the market witnessed a massive migration to the cloud as enterprises finally overcame their fears of the cloud’s viability, security, etc. Over the past 18 months, AWS, Google and Microsoft have waged an ongoing battle through a wave of price cuts and new features. For IT executives, sorting through all the noise to make the best cloud investment decisions has become daunting. Enterprises can and are moving away from a "one size fits all" cloud approach. The new competitive field has ...