SQL Performance

AUGUST 12, 2020

Of course, I’ll demonstrate this design aspect in this article. What’s different about the design of CTEs compared to derived tables is where in the code these three elements are located. However, there are very few cases in T-SQL where without a terminator the code is ambiguous. The elements are sort of intertwined.

C++ 140

C++ Code Design Database 140

Sutter's Mill

FEBRUARY 13, 2017

I don’t get to Europe very often apart from ISO C++ standards meetings, but this spring I’ve been able to accept invitations for two English-language European events in the last week of April. Tue-Thu Apr 25-27: High-Performance and Low-Latency C++ (Stockholm). Description.

Latency 51

Latency C++ Hardware Performance 51

SQL Performance

APRIL 13, 2022

Use the following code to create a table called T1 and populate it with a small set of sample data: SET NOCOUNT ON ; USE tempdb ; DROP TABLE IF EXISTS dbo. Use the following code to create the helper function GetNums: CREATE FUNCTION dbo. L0 AS ( SELECT 1 AS c. I recommend you try to find a solution before implementing mine.

C++ 136

C++ Strategy Testing Servers 136

Tech News Gather

DECEMBER 27, 2022

It is necessary to have a top-notch education app development process that provides all essential features. Through an education app development process, students can keep track of their attendance and progress throughout the school year. Course Management. Objective-C. billion in 2021 to $288.4 billion in 2031.

Education 52

Education Social Media Development Media 52

SQL Performance

NOVEMBER 11, 2020

But there’s another important aspect of CTE optimization, or physical processing, to consider beyond the solution’s performance—how multiple references to the CTE from an outer query are handled. WITH C AS ( SELECT SYSDATETIME ( ) AS dt ) SELECT @i += 1 FROM C WHERE dt = dt ; PRINT @i ; GO. -- Batch 3.

C++ 122

C++ Code Storage Processing 122

SQL Performance

JANUARY 13, 2021

The dbo.GetNumsItzikBatch function uses a dummy join to a table with a columnstore index to get batch processing. Here’s the code to create the dummy table: CREATE TABLE dbo. L0 AS ( SELECT 1 AS c. L0 AS ( SELECT 1 AS c. GetNumsItzikBatch ( @low AS BIGINT , @high AS BIGINT ) RETURNS TABLE.

C++ 113

C++ Code Testing Processing 113

SQL Performance

DECEMBER 8, 2021

The challenge involves querying a table called Auctions, which you create using the following code: DROP TABLE IF EXISTS dbo. ( ID INT NOT NULL IDENTITY ( 1 , 1 ) CONSTRAINT pk_Auctions PRIMARY KEY CLUSTERED , Code CHAR ( 1 ) NOT NULL. Demand entries are marked with the code D and supply entries with S.

C++ 133

C++ Code Benchmarking Performance 133

SQL Performance

JULY 13, 2022

This could also happen if you need to migrate code written for another database platform with a different dialect of SQL to T-SQL. Use the following code to create the Orders table and populate it with a small set of sample data to help you verify the validity of the solutions: SET NOCOUNT ON ; USE tempdb ; DROP TABLE IF EXISTS dbo.

C++ 112

C++ Code Azure Database 112

SQL Performance

MAY 13, 2020

Logical query processing handles query clauses in the following order: FROM>WHERE>GROUP BY>HAVING>SELECT>ORDER BY. I just wanted to mention some use cases here to illustrate how important table expressions are in our T-SQL code, and why it's worthwhile to invest in understanding their fundamentals well.

C++ 143

C++ Code Design Servers 143

Percona

DECEMBER 23, 2022

The use case is the TPC-C benchmark but executed not on a high-end server but on a lower-spec virtual machine that is I/O limited like for example, with AWS EBS volumes. If you wonder what is the difference between MyRocks and RocksDB, consider MyRocks as the piece of code, or the glue, that allows MySQL to store data in RocksDB.

Storage 56

Storage Cache C++ Virtualization 56

Dynatrace

MAY 23, 2022

IDC predicted, by 2022, 90% of all applications will feature microservices architectures that improve the ability to design, debug, update, and use third-party code. Monolithic architecture is development where an application is built on a single codebase, and the code is unilateral. Less code and stack lock-in.

Architecture 192

Architecture DevOps Monitoring Programming 192

SQL Performance

JUNE 10, 2020

This month and the next I’m going to cover the physical processing aspects of derived tables. That is, does SQL Server perform a substitution process whereby it converts the original nested code into one query that goes directly against the base tables? Well, I’m oversimplifying a bit.

C++ 109

C++ Database Servers Code 109

O'Reilly

AUGUST 9, 2022

GitHub Copilot (based on a model named Codex , which is derived from GPT-3) generates code in a number of programming languages, based on comments that the user writes. Going in the other direction, GPT-3 has proven to be surprisingly good at explaining code. But it’s obvious where this is trending. But I don’t know if that’s true.

Programming 105

Programming Java C++ Design 105

The Netflix TechBlog

MARCH 2, 2021

While working on my PhD in political science, I realized my curiosity was always more piqued by methodological coursework, which led me to take as many stats/data science courses as I could. I wanted to learn how to better extract interesting insight from data, which led me to take several courses in statistics and machine learning.

Analytics 207

Analytics C++ Innovation Engineering 207

SQL Performance

JUNE 10, 2020

This month and the next I’m going to cover the physical processing aspects of derived tables. That is, does SQL Server perform a substitution process whereby it converts the original nested code into one query that goes directly against the base tables? Well, I’m oversimplifying a bit.

C++ 93

C++ Database Servers Code 93

SQL Performance

MAY 11, 2022

These can result in different parts of the plan needing to process the input data in different orders. By following some basic tips you can sometimes reduce the number of explicit sort operators, which can, of course, have a major impact on the performance of the query. Environment for Demos. So, why does the plan have four sorts?

C++ 133

C++ Database Servers Code 133

SQL Performance

MAY 12, 2021

Use the following code to create the database if it doesn’t exist, and to enable I/O and time statistics: -- DB and stats. For simplicity’s sake, I’ll disable CLR strict security and make the database trustworthy using the following code: -- Enable CLR, disable CLR strict security and make db trustworthy. USE testdb ; GO.

C++ 111

C++ Servers Database Code 111

O'Reilly

JANUARY 13, 2020

So far, it’s been a painless shift in power, which as Eric Matthes, author of Python Crash Course , argues, should come as no surprise, since “Guido has carried himself, and his role in the community, with such poise for so long.” Does your function have side effects? Is it guaranteed to return a non-null value?

Programming 130

Programming Java Google C++ 130

CSS Wizardry

NOVEMBER 3, 2020

I want to be able to form hypotheses and draw conclusions without viewing a single URL or a line of source code. This means that I likely don’t need to do any specific work on any individual pages, but also suggests that any general back-end improvements I make in area A will also be felt in locations B and C , too. Final Word.

Speed 292

Speed Ecommerce Metrics Analytics 292

Sutter's Mill

APRIL 14, 2011

Scott Meyers, Andrei Alexandrescu and I are continuing to craft and announce the technical program for C++ and Beyond (C&B) 2011 , and two more sessions are now posted. All talks are brand-new material created specifically for C&B 2011. Here are short blurbs; follow the links for longer descriptions.

C++ 40

C++ Programming Strategy Scalability 40

The Morning Paper

NOVEMBER 12, 2019

Scaling symbolic evaluation for automated verification of systems code with Serval Nelson et al., The port and verification processes took about four-person weeks each (impressively little time, but remember these are world-experts in verification methods doing the work!). SOSP’19. How Serval works. What’s that all about?

Code 45

Code Systems Programming Google 45

The Netflix TechBlog

APRIL 17, 2019

The standard specification describes in minute detail how a video bitstream should be processed in order to produce displayable video frames. Reference software serves as the basis for standard development, a framework, in which the performance of video coding tools is evaluated.

Open Source 166

Open Source Scalability Speed Efficiency 166

The Morning Paper

JANUARY 28, 2020

" Running end-user compute inside the datastore is not without its challenges of course. " Running end-user compute inside the datastore is not without its challenges of course. A tenant should not be able to see the code or data of other tenants (isolation). High performance. Introducing Shredder. Shredder in action.

Serverless 99

Serverless Storage Latency Cloud 99

Particular Software

MARCH 28, 2022

With a saga, a business process that would otherwise have been implemented as a clunky batch job 1 can be built in a much more elegant and real-time manner. Saga analyzers Sagas have a powerful API, but it’s limited by the confines of C#. You can create a class that is a lousy saga but is still perfectly valid C# code.

Development 52

Development C++ Virtualization Metrics 52

HammerDB

FEBRUARY 25, 2021

For HammerDB both TPROC-C and TPROC-H run all of their workloads on the database being tested in SQL. The following is an example from TPROC-C from SQL Server. TPROC-C however is derived from the TPC-C specification and requires application logic around the SQL. Top 10 Processes. Database interfaces in C.

Programming 67

Programming Benchmarking Virtualization C++ 67

Sutter's Mill

JULY 8, 2011

I just posted two more sessions I’ll be giving next month at C++ and Beyond. “C++ Renaissance.” already know that C++ is “the” language of choice for demanding applications. already know that C++ is “the” language of choice for demanding applications. “How to Teach Today’s C++.”

C++ 40

C++ Lambda Programming Efficiency 40

SQL Performance

APRIL 14, 2021

Evaluating earlier solutions, one of the important factors in getting good performance was the ability to employ batch processing. Let’s examine the plans for two of the earlier solutions that utilized batch processing. But have we exploited it to the maximum extent possible?

C++ 112

C++ Servers Testing Code 112

Particular Software

AUGUST 30, 2021

Do you hate boilerplate code? Have you heard of C# source generators 1 and thought they sounded pretty cool but didn’t really know how they could be useful? Now, this code is all it takes to write transactionally consistent NServiceBus handlers inside of your Azure Function project. Do you think Azure Functions are pretty great?

Azure 52

Azure Transportation C++ Code 52

Smashing Magazine

NOVEMBER 16, 2021

DRM-free, of course. Chapter 8 covers the issues around imprecision and probability and shows how we need to design systems, interactions, and processes that prevent mistakes — especially avoiding catastrophe when mistaken taps are made. DRM-free, of course. If you are in the C-suite, do yourself a favor and read.

Mobile 87

Mobile Design Best Practices Website 87

Smashing Magazine

JUNE 30, 2021

iOS empowers developers to easily parallelize code using Grand Central Dispatch , Android does this via their new, unified task scheduler WorkManager and game engines like Unity have job systems. How long your piece of JavaScript takes to finish depends on how fast the device is that your code is running on.

Games 145

Games Architecture Code C++ 145

Smashing Magazine

JULY 1, 2021

Well, it’s simply an apt allegory when it comes to dealing with tests in a code base. These traps might feel like an unexpected ambush when you’re working on a code base, especially when doing so for a long time. They test units of code together, looking at their interaction. Integration tests have a broader scope.

Testing 120

Testing Best Practices Code Design 120

Alex Podelko

OCTOBER 28, 2016

This is the mainstream approach to load testing: recording communication between two tiers of the system and playing back the automatically created script (usually, of course, after proper correlation and parameterization). And, of course, there is a need to sequence and parameterize your API calls to represent a meaningful workload.

Performance Testing 100

Performance Testing Technology Technology Testing 100

Testsigma

FEBRUARY 3, 2021

Unit Testing – Developers execute unit tests for the smallest unit of code, whenever they commit new code in the code repository. We may ask our users to use the app for searching a course of their choice and take a few classes on it after making the payment. Reference: [link]. signup for free. Security Testing.

Mobile 82

Mobile Testing Hardware C++ 82

Percona

JUNE 4, 2023

Introduction: MariaDB vs. MySQL The goal of this blog post is to evaluate, at a higher level, MariaDB vs. MySQL vs. Percona Server for MySQL side-by-side to better inform the decision making process. Efficient data processing and indexing, making it optimal for executing queries and handling large datasets.

Open Source 52

Open Source Servers Storage Scalability 52

Highly Scalable

JUNE 5, 2012

From a functional point of view, we needed mainly a standard boolean query processing, so it was possible to use Solr/Lucene as a platform. In this article I describe several useful techniques that are based on SSE instructions and provide results of performance testing for Lucene, Java, and C implementations. Vectorized Intersection.

C++ 102

C++ Java Performance Testing Efficiency 102

Smashing Magazine

APRIL 9, 2019

This attribute contains seemingly endless alphanumeric junk that you may be tempted to strip out in the quest for cleaner code. If they can compromise that one file, they can very quickly have code running in millions of web pages across the globe. It doesn’t matter what that code is. This is why it’s used a lot on the web.

Website 57

Website Servers Code Best Practices 57

Smashing Magazine

JANUARY 11, 2021

Have we optimized enough with tree-shaking, scope hoisting, code-splitting, and all the fancy loading patterns with intersection observer, progressive hydration, clients hints, HTTP/3, service workers and — oh my — edge workers? It’s much easier to reach performance goals when the code base is fresh or is just being refactored.

Performance 145

Performance Cache Media Metrics 145