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Query Optimization Techniques in SQL

There are many aspects of performance tuning to keep in mind, and SQL query optimization is especially impactful. Query optimization techniques in SQL.

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Query optimization techniques in SQL

You are making your SQL database run like clockwork is an ongoing process. It is essential to stay on top of the most critical maintenance tasks if you want to avoid inefficiencies and prevent performance problems.

There are many aspects of performance tuning to keep in mind, and SQL query optimization is especially impactful. With that in mind, there are a few tips and strategies to deploy as you attempt to dispute with your queries to get them to behave better.

1. Finding flawed queries

The first part of the challenge you need to deal with is identifying which queries are operating as intended and currently suboptimal.

This is relatively straightforward if you have the right SQL server monitoring tools at your disposal. Most modern platforms will automatically flag queries that are taking longer than usual to execute and thus allow you to see where issues lie without needing to trawl through the data manually.

SQL query optimization

2. Steering clear of Select

It might seem simple to harness the SELECT command to get the results you desire from your query. Still, if your database is unusually large, this can seriously slow things down because using it in isolation without specifying the particular columns relevant to the given query can create a lot of unnecessary overhead.

Instead, it is better to combine SELECT with the needed columns, making sure to declare each independently to avoid errors occurring once you make this change.

3. Making use of indexes

Once again, queries tend to be suboptimal if they have to do a lot of work to zero in on the relevant data. It is not always a case that a longer and more thoroughly targeted query will be more efficient, of course, but this is certainly a good rule of thumb to adopt.

Try to use indexes within your database, so that entire table scans are not implemented whenever a query is run. An index can steer questions towards data in less time and without needing to put the same burden on I/O, which overcomes one of the most common hardware bottlenecks.

It is worth noting that overdoing it with indexes can hurt server performance, so it is all about striking a balance when working on query optimizations to make sure that you are not sitting at either extreme of this delicate spectrum.

Achieving this is typically done by making sure that the queries executed more regularly are indexed. At the same time, those that are rarely performed by the database need not be considered a priority for this.

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4. Consider other complications

It is worth remembering that SQL server query optimization is not something that should be performed in isolation, but instead as part of a broader strategy aimed at improving the performance of the database as a whole across a range of facets.

Indeed it is likely that if your server is not performing as expected, the culprit may be more multifaceted than it first appears and that if queries are taking too long to complete, then they may not be entirely at fault.

Everything from a software snafu with the OS to a failing hard drive can be implicated in suboptimal performance, which is why a DBA’s role can be taxing. With experience and a solid underpinning of knowhow, you should be able to make sure that queries are optimized and that the hardware and software infrastructure they operate can help them flourish.

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Computer

Computer Monitor and Other Remote Work Must-Haves

Make sure you have a computer monitor, various network cable types, and other remote work must-haves that I will discuss in this guide.

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Computer Monitor and Other Remote Work Must-Haves

Working remotely is a great way to increase productivity. It can help you avoid the distractions of an office environment and makes it easier to set your hours. But if you’re not careful, working from home can also lead to some serious work-life balance issues.

To make sure that you’re getting the most out of your remote work experience, make sure you have a computer monitor, various network cable types, and other remote work must-haves that I will discuss in this guide.

1. A Computer Monitor

This is probably the most important item on this list. If you don’t have a good monitor, then it will be impossible to work efficiently.

While it may be tempting to go with a smaller, cheaper screen to save money, this isn’t always a good idea. The bigger your screen, the more productive you’ll be. You will be able to see more of your images and documents without scrolling or zooming in and out.

There are main things to consider when buying a monitor:

2. Screen resolution and screen size.

The resolution refers to how many pixels (dots) fit across one inch of screen real estate; the higher the number is, the sharper everything will look on your screen.

Screen size should be based on personal preference and how much space you have available in your office or home office setup.

2. Webcam

A camera is essential for video chat and video conferencing. Many webcams come with microphones built-in, so you can conduct conference calls without having to purchase additional equipment.

If you want to make sure everyone in the room can see and hear you clearly, make sure your webcam has a built-in microphone jack.

If your laptop doesn’t have a built-in webcam, you can buy it separately for about $20 from retailers. There are even some companies that offer free webcams for employees who work remotely.

3. External Storage Device

You’ll need an external hard drive to store all of your files so that they’re not taking up space on your computer’s internal memory which can fill up quickly.

External storage devices come in different sizes and speeds so make sure you buy one that’s big enough for what you need.

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4. Internet Connection

If you’re going to be working from home or a coffee shop or anywhere else outside the office, you need good internet access to do your job.

No matter what kind of internet connection you have at home, it is essential that your internet connection is fast enough to research online and download required documents.

5. Ethernet Cables

If you’re working from home, you might be tempted to use Wi-Fi for your internet connection instead of an Ethernet cable. While this may seem more convenient at first glance, it’s not a good idea because Wi-Fi can be affected by interference from other devices in the area.

6. Headphones

While many remote workers prefer to work in silence, there are times when it’s better to have some background noise or music playing while you work.

Headphones allow you to listen to music without bothering anyone else around you. Plus, they reduce distractions from outside noise that could otherwise distract you from getting work done.

Consider investing in a pair of noise-canceling headphones if you’ll be working in public places often; these types of headphones block out external sounds so that only what’s inside them can be heard clearly which means no distractions for you.

7. An Uninterruptible Power Supply (UPS)

If the power goes out, your computer goes down which means no work gets done. Make sure that won’t happen by using an uninterruptible power supply (UPS) with surge protection features that will continue running your computer even if there’s a power outage at home or in the office building where you work remotely.

8. A laptop

You will need a computer with internet access to work remotely. You can use your personal computer or purchase one that has been made for working remotely.

If you use your computer, make sure it has enough memory and processing power to handle the tasks you need it to do. It should also have virus protection software installed on it at all times.

9. A Good Laptop Bag

The last thing you want is for your laptop to get damaged or stolen while traveling with all of your other personal belongings inside of it. Make sure you have a protective case or sleeve that can protect it from impact damage as well as theft.

10. A Comfortable Chair and Desk

This may seem obvious, but it’s essential to have a desk and a good chair in your home office or den. You don’t need anything too fancy, just a place to set your laptop and put things like pens and paper that you might need during the day.

You’ll be sitting in a chair for hours at a time, so make sure it’s comfortable. If you have back issues, spend the money on a good ergonomic office chair.

11. A Desk Lamp

This is another pretty obvious one, but it’s often overlooked when setting up remote workspaces. A desk lamp will keep your eyes from straining at night and make it easier for you to stay focused on what you’re working on.

If possible, choose one with an adjustable arm so that it can be used as both an overhead light source and a task light when needed.

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