|By Jessica Qiu||
|December 9, 2013 06:45 AM EST||
As we know, the stored procedure is designed to handle computations involving complex business logics.
In the past, the data structure and business logics were so simple that one SQL statement was enough to achieve user's computational goal. With the rapid growing of information industry, users frequently find that they need to achieve the increasingly complex computational goals to out-perform their competitors. To address such computations, SQL alone is far from enough. Database programmers have the additional demands regarding the judge and loop statements, branches at multiple levels, or more accurate data transverse operations, as well as decomposing an obscure goal into several clear and actionable steps correlated with complex logics. It was for all these demands that the stored procedure was introduced.
The stored procedure has so far become the preferred tools for complex data computations, playing an quite important role. However, stored procedures still cause various inconveniences. For example, lots of their functions are inconvenient - hard to debug or migrate; and there are some databases with rather weak stored procedures. These problems sometimes affect the efficiency of database developers seriously.
The inconvenient functions of stored procedure include the incomplete step-by-step computation, weak support for set-lized data computing, no sequence number can be set for the data set, and no object-reference mechanism. Let's check it out with a simple example - find the "top n best-selling products in whatsoever State" by analyzing the regional sales table. In this scenario, those inconveniences makes it quite complex to write a stored procedure.
01 create or replace package salesPkg
03 type salesCur is ref cursor;
05 CREATE OR REPLACE PROCEDURE topPro(io_cursor OUT salesPkg.salesCur)
07 varSql varchar2(2000);
08 tb_count integer;
10 select count(*) into tb_count from dba_tables where table_name='TOPPROTMP';
11 if tb_count=0 then
12 strCreate:='CREATE GLOBAL TEMPORARY TABLE TOPPROTMP (
stateTmp NUMBER not null,
productTmp varchar2(10) not null,
amountTmp NUMBER not null
ON COMMIT PRESERVE ROWS';
13 execute immediate strCreate;
14 end if;
15 execute immediate 'truncate table TOPPROTMP';
16 insert into TOPPROTMP(stateTmp,productTmp,amountTmp)
select state,product,amount from stateSales a
(a.state,a.product) in (
select state,product from stateSales group by state,product having count(*) > 1
and rowid not in (
select min(rowid) from stateSales group by state,product having count(*)>1
order by state,product;
17 OPEN io_cursor for
18 SELECT productTmp FROM (
FROM (SELECT stateTmp,productTmp,amountTmp,RANK() OVER(PARTITION BY stateTmp ORDER BY amountTmp DESC) rankorder
WHERE rankorder<=10 order by stateTmp
GROUP BY productTmp
HAVING COUNT(*)=(SELECT COUNT(DISTINCT stateTmp ) FROM TOPPROTMP);
In which, the code at line 16 is to filter the duplicates, and write the filtered data to the "temporary table". Since it is difficult to retrieve the distinct data directly, try this tip: find the duplicate data, then use "not" to reverse the condition, and the remaining is the distinct data. This function can be implemented by embedding two sub-queries.
For another example, the line 18 is to find the products ranking among the top 10 in whatsoever State. Firstly, use the window function to get the product rankings rankorder of each State; Secondly, filter out the top 10 products in each State; Lastly, get the products ranking among the top 10 in whatsoever State.SQL does not provide any functions to seek the intersection sets. So, to address this weak point, here is another tip: group by product so as to check if the number of a same products is equal to the number of States; if they are equal, it indicates that the product is ranking among the top 10 in every State.
Besides the inconvenient functions, the rather weak support for debug function is another inconvenience of stored procedures.
Although there are Oracle, DB2, and other databases offering debug function for their respective stored procedures in the market, their debug functions are incomplete. In running the stored procedure, no matter a SQL statement is long or short, no matter how many nested loops or the computational steps it contains, programmers can only view the result of one statement, and the intermediate procedure is completely transparent to them. It rather defeats the purpose of step-by-step debug, and compromising the benefits of running to cursor or the next step. The programmers are actually only allowed to view the cursor and the simple variables. Such variables are useful, but by no means the same important as the intermediate procedure of SQL. Another trouble is that lots of setting and preparation workloads are required to launch the debugging tools. The beginners can hardly handle it without guides.
The third inconvenience is that the stored procedure is hard to migrate. Generally speaking, SQL can be migrated with a few simple modifications. Despite the slight difference in syntax details, the SQLs from various vendors are all the supersets of the ANSI standard. However, the stored procedure is quite another thing. Migrating a stored procedure is much more complex than rewriting one because the relevant standards of various vendors differ greatly. In this situation, users have no choice but stick to one database vendor rigidly. There is not any room left for users to beat down the price if database vendors overcharge them on upgrading their servers, storages, and user license agreements.
SQL is an essential function of any database, while the stored procedure is not. Some databases only offer the relatively poor stored procedures, and the others do not provide it at all. Take the stored procedures of MySQL for example. Its functions and performances are worse than that of the MS SQL, Oracle and some other databases, and MySQL may throw many exceptions on intensive concurrency. MSSQL Compact, SQLITE, Hive, Access, and other databases do not support the stored procedures.
Obviously, the inconveniences of stored procedures have compromised the computational performance of database, and given much troubles to programmers - considerable development difficulty, inefficient development, and awkward maintenances. In addition, these inconveniences also affect the result of implementing business logics, achieving complex computational goal, and making smart business decision. Then, how to empower the stored procedure?
esProc is a database computing script specially built for addressing the complex computational goal. With the computational performance equally good and even better than that of stored procedures, esProc additionally provides the advantageous intuitive grid style, step-by-step computation, professional debug features, agile syntax, complete computational system, and seamless support for the interactive computations between various databases.
esProc is a scripting tool with a grid style. With esProc, the computational logics can be laid out in a 2D space conveniently. The business algorithm can thus be interpreted in the computer language more easily. esProc advocates the step-by-step computation. To put it concretely, esProc enable users to decompose a complex goal into several simple steps in its grid, and ultimately achieve a complex goal by accomplishing those simple objectives. Designed with the "step-by-step" thoughts, a really practical debug function is introduced with esProc, including various functions like the break point, stepping, run to cursor, start, and end. Unlike the fake debugging script as SQL/SP, esProc can debug the basic steps directly and straightforwardly, needless building a specific intermediate table. The break point can be set in any position without altering the code.
As a big data computing script, esProc supports the true data type of set. A member of a set can be the data of any simple data types, records, and/or other sets. esProc supports the ordered set, which means that users can access to the set member and perform the sequence-number-related computation, for example, ranking, sorting, year-over-year comparison, and link relative ratio comparison. The set-of-set can be used to represent the equal grouping, align grouping, and enum grouping. In addition, users can operate on the individual records in the same way as they used to operate on an object. esProc can represent the complex computation more easily with its agile syntax, for example, computing the relative positions in multi-level groupings, and grouping and summarizing by a specified set.
esProc can empower the stored procedures, and ultimately boost the computational capability of database, reduce the development difficulty for programmers, improve the development efficiency, and facilitate the code maintenance and migration. esProc can implement the complex data algorithms and business logics easily.
Finally, for the above case we've discussed to conclude the inconveniences of stored procedures, let's check out the esProc solution shown below:
IoT generates lots of temporal data. But how do you unlock its value? How do you coordinate the diverse moving parts that must come together when developing your IoT product? What are the key challenges addressed by Data as a Service? How does cloud computing underlie and connect the notions of Digital and DevOps What is the impact of the API economy? What is the business imperative for Cognitive Computing? Get all these questions and hundreds more like them answered at the 18th Cloud Expo...
May. 28, 2016 01:00 PM EDT Reads: 2,327
SYS-CON Events announced today the Docker Meets Kubernetes – Intro into the Kubernetes World, being held June 9, 2016, in conjunction with 18th Cloud Expo | @ThingsExpo, at the Javits Center in New York, NY. Register for 'Docker Meets Kubernetes Workshop' Here! This workshop led by Sebastian Scheele, co-founder of Loodse, introduces participants to Kubernetes (container orchestration). Through a combination of instructor-led presentations, demonstrations, and hands-on labs, participants learn ...
May. 28, 2016 01:00 PM EDT Reads: 1,997
SYS-CON Events announced today the How to Create Angular 2 Clients for the Cloud Workshop, being held June 7, 2016, in conjunction with 18th Cloud Expo | @ThingsExpo, at the Javits Center in New York, NY. Angular 2 is a complete re-write of the popular framework AngularJS. Programming in Angular 2 is greatly simplified. Now it’s a component-based well-performing framework. The immersive one-day workshop led by Yakov Fain, a Java Champion and a co-founder of the IT consultancy Farata Systems and...
May. 28, 2016 11:00 AM EDT Reads: 4,049
Agile teams report the lowest rate of measuring non-functional requirements. What does this mean for the evolution of quality in this era of Continuous Everything? To explore how the rise of SDLC acceleration trends such as Agile, DevOps, and Continuous Delivery are impacting software quality, Parasoft conducted a survey about measuring and monitoring non-functional requirements (NFRs). Here's a glimpse at what we discovered and what it means for the evolution of quality in this era of Continuo...
May. 28, 2016 10:15 AM EDT Reads: 1,613
Last week I had the pleasure of speaking on a panel at Sapphire Ventures Next-Gen Tech Stack Forum in San Francisco. Obviously, I was excited to join the discussion, but as a participant the event crystallized not only where the larger software development market is relative to microservices, container technologies (like Docker), continuous integration and deployment; but also provided insight into where DevOps is heading in the coming years.
May. 28, 2016 09:45 AM EDT Reads: 1,527
SYS-CON Events announced today that BMC Software has been named "Siver Sponsor" of SYS-CON's 18th Cloud Expo, which will take place on June 7-9, 2015 at the Javits Center in New York, New York. BMC is a global leader in innovative software solutions that help businesses transform into digital enterprises for the ultimate competitive advantage. BMC Digital Enterprise Management is a set of innovative IT solutions designed to make digital business fast, seamless, and optimized from mainframe to mo...
May. 28, 2016 09:45 AM EDT Reads: 2,263
Join us at Cloud Expo | @ThingsExpo 2016 – June 7-9 at the Javits Center in New York City and November 1-3 at the Santa Clara Convention Center in Santa Clara, CA – and deliver your unique message in a way that is striking and unforgettable by taking advantage of SYS-CON's unmatched high-impact, result-driven event / media packages.
May. 28, 2016 09:00 AM EDT Reads: 2,431
In the rush to compete in the digital age, a successful digital transformation is essential, but many organizations are setting themselves up for failure. There’s a common misconception that the process is just about technology, but it’s not. It’s about your business. It shouldn’t be treated as an isolated IT project; it should be driven by business needs with the committed involvement of a range of stakeholders.
May. 28, 2016 08:00 AM EDT Reads: 2,563
You might already know them from theagileadmin.com, but let me introduce you to two of the leading minds in the Rugged DevOps movement: James Wickett and Ernest Mueller. Both James and Ernest are active leaders in the DevOps space, in addition to helping organize events such as DevOpsDays Austinand LASCON. Our conversation covered a lot of bases from the founding of Rugged DevOps to aligning organizational silos to lessons learned from W. Edwards Demings.
May. 28, 2016 07:45 AM EDT Reads: 1,491
Earlier this week, we hosted a Continuous Discussion (#c9d9) on Continuous Delivery (CD) automation and orchestration, featuring expert panelists Dondee Tan, Test Architect at Alaska Air, Taco Bakker, a LEAN Six Sigma black belt focusing on CD, and our own Sam Fell and Anders Wallgren. During this episode, we discussed the differences between CD automation and orchestration, their challenges with setting up CD pipelines and some of the common chokepoints, as well as some best practices and tips...
May. 28, 2016 07:15 AM EDT Reads: 1,395
When I talk about driving innovation with self-organizing teams, I emphasize that such self-organization includes expecting the participants to organize their own teams, give themselves their own goals, and determine for themselves how to measure their success. In contrast, the definition of skunkworks points out that members of such teams are “usually specially selected.” Good thing he added the word usually – because specially selecting such teams throws a wrench in the entire works, limiting...
May. 28, 2016 06:15 AM EDT Reads: 1,603
SoftLayer operates a global cloud infrastructure platform built for Internet scale. With a global footprint of data centers and network points of presence, SoftLayer provides infrastructure as a service to leading-edge customers ranging from Web startups to global enterprises. SoftLayer's modular architecture, full-featured API, and sophisticated automation provide unparalleled performance and control. Its flexible unified platform seamlessly spans physical and virtual devices linked via a world...
May. 28, 2016 06:00 AM EDT Reads: 2,256
Automation is a critical component of DevOps and Continuous Delivery. This morning on #c9d9 we discussed CD Automation and how you can apply Automation to accelerate release cycles, improve quality, safety and governance? What is the difference between Automation and Orchestration? Where should you begin your journey to introduce both?
May. 28, 2016 05:45 AM EDT Reads: 1,425
SYS-CON Events announced today TechTarget has been named “Media Sponsor” of SYS-CON's 18th International Cloud Expo, which will take place on June 7–9, 2016, at the Javits Center in New York City, NY, and the 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. TechTarget is the Web’s leading destination for serious technology buyers researching and making enterprise technology decisions. Its extensive global networ...
May. 28, 2016 05:00 AM EDT Reads: 3,245
SYS-CON Events announced today that Commvault, a global leader in enterprise data protection and information management, has been named “Bronze Sponsor” of SYS-CON's 18th International Cloud Expo, which will take place on June 7–9, 2016, at the Javits Center in New York City, NY, and the 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA. Commvault is a leading provider of data protection and information management...
May. 28, 2016 04:15 AM EDT Reads: 3,196
As AT&Ts VP of Domain 2.0 architecture writes one aspect of their Domain 2.0 strategy is a goal to embrace a Microservices Application Architecture. One page 9 they describe how these envisage them fitting into the ECOMP architecture: "The initial steps of the recipes include a homing and placement task using constraints specified in the requests. ‘Homing and Placement' are micro-services involving orchestration, inventory, and controllers responsible for infrastructure, network, and applicati...
May. 28, 2016 02:45 AM EDT Reads: 1,852
Many banks and financial institutions are experimenting with containers in development environments, but when will they move into production? Containers are seen as the key to achieving the ultimate in information technology flexibility and agility. Containers work on both public and private clouds, and make it easy to build and deploy applications. The challenge for regulated industries is the cost and complexity of container security compliance. VM security compliance is already challenging, ...
May. 28, 2016 01:15 AM EDT Reads: 1,313
A strange thing is happening along the way to the Internet of Things, namely far too many devices to work with and manage. It has become clear that we'll need much higher efficiency user experiences that can allow us to more easily and scalably work with the thousands of devices that will soon be in each of our lives. Enter the conversational interface revolution, combining bots we can literally talk with, gesture to, and even direct with our thoughts, with embedded artificial intelligence, wh...
May. 28, 2016 12:30 AM EDT Reads: 2,031
SYS-CON Events announced today that Tintri Inc., a leading producer of VM-aware storage (VAS) for virtualization and cloud environments, will exhibit at the 18th International CloudExpo®, which will take place on June 7-9, 2016, at the Javits Center in New York City, New York, and the 19th International Cloud Expo, which will take place on November 1–3, 2016, at the Santa Clara Convention Center in Santa Clara, CA.
May. 28, 2016 12:15 AM EDT Reads: 2,453
Just last week a senior Hybris consultant shared the story of a customer engagement on which he was working. This customer had problems, serious problems. We’re talking about response times far beyond the most liberal acceptable standard. They were unable to solve the issue in their eCommerce platform – specifically Hybris. Although the eCommerce project was delivered by a system integrator / implementation partner, the vendor still gets involved when things go really wrong. After all, the vendo...
May. 27, 2016 11:45 PM EDT Reads: 1,450