Angela  Dickens

Angela Dickens

1598258580

MySQL Aggregate Functions - SUM,COUNT, MAX, MIN, AVG

In database management, an aggregate function or aggregation function, according to Wikipedia, is a function where the values of multiple rows are grouped to form a single summary value.

There are different aggregate functions, such as SUM, COUNT, MAX, MIN, AVG, etc. In this tutorial, we’ll cover the most used aggregate function in detail.

Contents

Introduction

Basically an aggragate function performs a calculation on a set of values, and returns a single value.

Consider the table of author that we usually use in our SQL tutorials. For illustration we added salary column.

Author Tabl

Let’s see how it works.

#mysql #snippets #mysql aggregate functions #function

What is GEEK

Buddha Community

MySQL Aggregate Functions - SUM,COUNT, MAX, MIN, AVG
Angela  Dickens

Angela Dickens

1598258580

MySQL Aggregate Functions - SUM,COUNT, MAX, MIN, AVG

In database management, an aggregate function or aggregation function, according to Wikipedia, is a function where the values of multiple rows are grouped to form a single summary value.

There are different aggregate functions, such as SUM, COUNT, MAX, MIN, AVG, etc. In this tutorial, we’ll cover the most used aggregate function in detail.

Contents

Introduction

Basically an aggragate function performs a calculation on a set of values, and returns a single value.

Consider the table of author that we usually use in our SQL tutorials. For illustration we added salary column.

Author Tabl

Let’s see how it works.

#mysql #snippets #mysql aggregate functions #function

Joe  Hoppe

Joe Hoppe

1595905879

Best MySQL DigitalOcean Performance – ScaleGrid vs. DigitalOcean Managed Databases

HTML to Markdown

MySQL is the all-time number one open source database in the world, and a staple in RDBMS space. DigitalOcean is quickly building its reputation as the developers cloud by providing an affordable, flexible and easy to use cloud platform for developers to work with. MySQL on DigitalOcean is a natural fit, but what’s the best way to deploy your cloud database? In this post, we are going to compare the top two providers, DigitalOcean Managed Databases for MySQL vs. ScaleGrid MySQL hosting on DigitalOcean.

At a glance – TLDR
ScaleGrid Blog - At a glance overview - 1st pointCompare Throughput
ScaleGrid averages almost 40% higher throughput over DigitalOcean for MySQL, with up to 46% higher throughput in write-intensive workloads. Read now

ScaleGrid Blog - At a glance overview - 2nd pointCompare Latency
On average, ScaleGrid achieves almost 30% lower latency over DigitalOcean for the same deployment configurations. Read now

ScaleGrid Blog - At a glance overview - 3rd pointCompare Pricing
ScaleGrid provides 30% more storage on average vs. DigitalOcean for MySQL at the same affordable price. Read now

MySQL DigitalOcean Performance Benchmark
In this benchmark, we compare equivalent plan sizes between ScaleGrid MySQL on DigitalOcean and DigitalOcean Managed Databases for MySQL. We are going to use a common, popular plan size using the below configurations for this performance benchmark:

Comparison Overview
ScaleGridDigitalOceanInstance TypeMedium: 4 vCPUsMedium: 4 vCPUsMySQL Version8.0.208.0.20RAM8GB8GBSSD140GB115GBDeployment TypeStandaloneStandaloneRegionSF03SF03SupportIncludedBusiness-level support included with account sizes over $500/monthMonthly Price$120$120

As you can see above, ScaleGrid and DigitalOcean offer the same plan configurations across this plan size, apart from SSD where ScaleGrid provides over 20% more storage for the same price.

To ensure the most accurate results in our performance tests, we run the benchmark four times for each comparison to find the average performance across throughput and latency over read-intensive workloads, balanced workloads, and write-intensive workloads.

Throughput
In this benchmark, we measure MySQL throughput in terms of queries per second (QPS) to measure our query efficiency. To quickly summarize the results, we display read-intensive, write-intensive and balanced workload averages below for 150 threads for ScaleGrid vs. DigitalOcean MySQL:

ScaleGrid MySQL vs DigitalOcean Managed Databases - Throughput Performance Graph

For the common 150 thread comparison, ScaleGrid averages almost 40% higher throughput over DigitalOcean for MySQL, with up to 46% higher throughput in write-intensive workloads.

#cloud #database #developer #digital ocean #mysql #performance #scalegrid #95th percentile latency #balanced workloads #developers cloud #digitalocean droplet #digitalocean managed databases #digitalocean performance #digitalocean pricing #higher throughput #latency benchmark #lower latency #mysql benchmark setup #mysql client threads #mysql configuration #mysql digitalocean #mysql latency #mysql on digitalocean #mysql throughput #performance benchmark #queries per second #read-intensive #scalegrid mysql #scalegrid vs. digitalocean #throughput benchmark #write-intensive

Brad  Hintz

Brad Hintz

1594786380

SQL min() and max() Functions

SQL MIN() Function

The SQL min() function is used to find the minimum/lowest value in the given column. The syntax for using the function is given below.

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2

3

**SELECT** **MIN**``(``**column**``)

**FROM** **Table**

**WHERE** condition;

Where, column and Table are the column name and table name respectively for which we need to find the minimum value. The [WHERE](https://www.journaldev.com/18411/sql-where-clause) condition is used to narrow down the set of values on the basis of the condition.

Let us look at an example to get a better understanding.

Example: The table below contains the score of 3 different students in 3 different subjects(Maths, Science, and English) out of 100.

RollNameMathsScienceEnglish1John9589902Kate7890913Alex879289

Table – Marks

Now, let us try to get the minimum marks that a student scored at Maths.

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**SELECT** **MIN**``(Maths)

**FROM** Marks;

Output:

1

Example – To calculate the overall minimum marks that a student scored out of 300.

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2

**SELECT** **MIN**``(Maths + Science + English)

**FROM** Marks;

Output:

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259

We get the desired output as Roll 2 got the lowest total marks(78 + 90 + 91 = 259).

SQL MAX() Function

The SQL max() function on the other hand is used to find the maximum/highest value in the given column. The syntax for using the function is given below.

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2

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**SELECT** **MAX**``(``**column**``)

**FROM** **Table**

**WHERE** condition;

Similar to the min() function, here too column and Table are the column name and table name respectively for which the maximum value is to be calculated. The [WHERE](https://www.journaldev.com/18411/sql-where-clause) condition is used to narrow down the set of values on the basis of the condition.

Example – Considering the same Marks table used for the min() function, let us this time try to calculate the maximum marks that a student scored in English.

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2

**SELECT** **MAX**``(English)

**FROM** Marks;

Output:

1

Example – To calculate the maximum marks that a student scored out of 300 in **all **the subjects.

1

2

**SELECT** **MAX**``(Maths + Science + English)

**FROM** Marks;

Output:

1

274

From the table Marks it is clear that Roll 1 has the highest total marks(95 + 90 + 89 = 274). Hence, the output is justified.

#sql #functions #max #min

Basic Methods of Resolving AVG Antivirus Issues: - www.avg.com/retail

If you a new user for AVG antivirus software or an old user looking for tips to troubleshoot your AVG antivirus software, you have landed in the right place. An AVG antivirus issue is among the most preferred software by several users. The security and reliability that AVG offers have no match to any other antivirus software. But if this AVG software stops working or create trouble, the entire work on your device might be affected. You will need to carry out AVG antivirus troubleshooting to fix the errors of AVG antivirus software. www.avg.com/retail installation product key code 2021

 

AVG antivirus issues:

  • If there is a framework error, your AVG antivirus might become unsupported.
  • At times, your antivirus might not be able to update or will show an error message while updating.
  • Installing and uninstalling issues of AVG antivirus software.
  • Problems faced while creating a new AVG account and while generating the monthly reports of your machine.
  • Scheduled updating of the antivirus software is unable to start.
  • The automatic update of the software shows error.
To solve these AVG related problems, AVG users need to update their antivirus software. avg.com/retail

 

Updating AVG software:

  • To begin with your AVG antivirus software’s updating process; you need to download the latest version of the DAT file.
  • DAT will create a temporary folder in C driver by its name.
  • You can download the DAT file by visiting the official AVG website.
  • Now, go your system’s Start menu and tap on the Programs option.
  • Tap on your AVG software and open the virus scan console.
  • Click Ok after double-clicking on the option of “Access Protection.”
  • Finally, exit the virus scan console.
It will update your AVG antivirus software to the latest version.

 

Troubleshooting AVG antivirus:

  • Begin the troubleshooting of your AVG antivirus software by restarting the device on which you are using the AVG software (mobile, desktop, laptop, or tablet).
  • Next, download the AVG antivirus removal tool and uninstall the AVG antivirus software using the same tool.
  • Inspect your device and ensure no antivirus is installed on your device.
  • Now, restart your device and reinstall the AVG antivirus software.
  • Download a new and updated version of the software to reinstall.
  • Once the download of AVG antivirus has completed, start with the installation process by following the on-screen instructions.
  • Once the installation process of AVG has finished, check if your antivirus software is working fine. avg.com/retail download the product key code 2021
 

To know the answer to how to install AVG antivirus, see the steps given below:

 

  • Visit the website home.AVG.com on your web browser.
  • Sign in to My Account.
  • Enter your AVG account’s email address and password. If you are not already registered with AVG, create a new account first.
  • Accept the terms of AVG by reading thoroughly and clicking on, I agree.
  • Follow the on-screen instructions for the final installation process of AVG software.
visit here this link: How Do I Activate My AVG Business Edition with License Number in 2021?

The methods mentioned in this blog will help the users in the AVG antivirus troubleshooting process. avg.com/registration

read also here…

www.webroot.com/safe
www.office.com/setup

#resolving avg antivirus problems #avg antivirus issues #www.avg.com/retail #avg.com/retail #avg antivirus #avg.com/registration

Where to enter an activation code to Download & install AVG? - www.avg.com/retail

AVG is one of the most popular Antivirus presents in the market right now. AVG products cover most of the security issues like internet security, virus protection, malware protection, etc. To give your computer total security from various securities thread AVG is a perfect choice. And you can download & install AVG on your Windows computer, AVG download with activation code is very easy but we move further, we must fulfill some requirements in order to download and install www.avg.com/retail getting the free key with code 2021.

 

Requirements Download & Install AVG Product:

There are some basic requirements to use AVG on your computer efficiently. These requirements are very essential for download & install avg.com/retail download the free key with code 2021.

 

Activation Code to download and install AVG:

An AVG activation code is a unique combination of 25 alphabets and numbers. These alphanumeric characters are group into four groups; each group has 5 alphanumeric characters. This looks like

XXXXX-XXXXX-XXXXX-XXXXX

You will find this activation code on your retail card if you purchased your AVG product from an off-line store or a retail shop. If you buy your AVG from an on-line store then you can find your Activation Code on your purchase confirmation email.

 

Minimum System Requirements to download and install AVG:

Operating System – Win 10/ 8/ 7

Processor – 1.5 GHz

RAM- 1GB

Storage Space – 1024 MB

 

How to download AVG Product:

There are many variants of AVG that come in the market. All variant have their possess specialty and capability to secure your system against viruses, malware, spyware, and many more malicious things.

 

Choose AVG Product Variant:

Choosing the correct AVG Variant is so important according to your use and the protection you want, Even you are willing to buy any of AVG Products.

So to choose your AVG Product variant by visiting www.avg-com-retail.support. Here when you scroll down you will find there are several AVG Products are listed below. Select your correct AVG Product and click “FREE, 30-DAY TRIAL” Button. Or you can click on “BUY” if you want to one of those.

 

Download AVG Product:

Once you click on “FREE, 30-DAY TRIAL”, you will redirect to a different page. On that page, you resolve have a short depiction of the product and features of it.

Under the right below of it, you will see a “Download Now” Click on it. You can download and done AVG product activation with a valid activation code further.

 

AVG product Trail Activation:

When click on “Download Now” a popup window will appear on your display. Fill the information for which it ask and click “Download”.

Remember if you already purchased a AVG Product and you have a AVG Account too, so please use your registered email-id to “DOWNLOAD” it.

 

Install AVG product:

Once the download is complete RUN it for start the installation. When you begin it a AVG installation window will appear, follow the instructions in order to complete the installation.

If any incompatible program comes up which are already installed in your system, Please remove it and complete the installation at www avg com retail.

 

Launch AVG for activation:

In the Installation window when it asks to launch AVG Protection, Check the box and launch it.

 

Put your AVG product Activation Code:

Once to launch the AVG Protection a new window comes up here you can put your Valid 20 character Activation Code. Before putting your AVG Activation Code makes sure your pc Date & Time set properly correct and your internet connection in on.

After putting the AVG Activation Code click on “Activate”.

know here this link : How You Can Scan and Remove Malware From Your Router?

Finish the AVG installation:

When you activate your AVG product with a Valid Activation Code. All things are done, now you can finish the process by clicking “FINISH”.

It is recommended to restart your Computer after successful installation, to let AVG configure all the settings in your computer for the best protection of your PC. www.avg.com/registration

read here also…

www.office.com/setup
www.webroot.com/safe

#download & install avg #avg product with an activation code #www.avg.com/retail #avg.com/retail #install avg #avg.com/registration