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Query Tuning with SQL Server 2019

SQL Shack

In this article, we will talk about the query tuning features that were announced with SQL Server 2019. Introduction Sometimes, tuning the queries can be a tough task for database developers or administrators.

Tuning 76
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Percona Database Performance Blog 2018 Year in Review: Top Blog Posts

Percona

Let’s look at some of the most popular Percona Database Performance Blog posts in 2018. With the Percona Database Performance Blog, Percona staff and leadership work hard to provide the open source community with insights, technical support, predictions and metrics around multiple open source database software technologies.

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Finding Distinct Values Quickly

SQL Performance

Back in 2014, I wrote an article called Performance Tuning the Whole Query Plan. This follow-up post revisits the question for SQL Server 2019, using a larger number of rows. I will be using the 50GB Stack Overflow 2013 database , but any large table with a low number of distinct values would do. Test Environment.

Servers 86
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What Is PostgreSQL Used For?

Percona

PostgreSQL is open source relational database management software. StackOverflow statistics show that 26% of developers preferred it in 2017, 34% in 2019, and 40% in 2021. PostgreSQL supports multiple concurrent users and can handle complex database operations without downtime or data loss. What is PostgreSQL used for?

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Native support for IBM mainframe in Dynatrace provides end-to-end visibility and AI-powered answers

Dynatrace

Here’s what you can do with our GA code modules for z/OS: Gain insight into the CICS Transaction Server on z/OS with our CICS code module. CICS Transaction Server 5.1 / 5.2 / 5.3 / 5.4 / 5.5 A OneAgent for zLinux is planned for June 2019 with support for IBM Integration Bus, Java, and IBM HTTP Server. are supported.

Java 116
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Reducing High CPU on MySQL: a Case Study

Percona

The server is a small instance: Models | 6xIntel(R) Xeon(R) CPU E5-2430 0 @ 2.20GHz 10GB RAM This symptom can be caused by various different reasons. There could be more, but this particular query was definitely hurting the performance of the server. 2019-02-22T18:26:25 Creating triggers. 2019-02-22T18:27:14 Created triggers OK.

C++ 102
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The challenge is on! Community call for creating the fastest number series generator

SQL Performance

You can create supporting tables in the user database if needed. I tested my solutions in SQL Server 2019 Enterprise edition. SQL Server chose row mode processing for all previously shown solutions by default. There are a couple of ways to get SQL Server to use batch processing here. You can add hints as needed.

C++ 114