To learn the basics of SQL Server, you must have an understanding of how an SQL Server query engine executes an SQL query. T-SQL involves both logical and physical query processing. Physical query processing is about how a database engine processes a query. Logical query processing is a conceptual flow, an order of the clauses knowing how SQL Server evaluates these clauses while executing a query.
SQL Server has introduced multiple ways to handle NULL values. The functions that are most used to handle NULLs are COALESCE and ISNULL in SQL Server. These functions are used to find Non-NULL values from a list of arguments. In this post, we will see the uses of the ISNULL and COALESCE functions and their differences with examples.
YouTube has always been a great place for exploring music for free. With millions of user-uploaded videos and with the help of the smart suggestion feature, you may never run out of songs to play. However, the platform is not ideal for listening to music on-the-go when you have to use your mobile connection because the size of the videos may be too large. You also have to stay connected to the internet constantly to enjoy the music on YouTube. Luckily, it is possible to convert YouTube videos to mp3 files for listening offline on your phone. Continue reading to find out how.
You probably cannot imagine Android without the Play Store and its apps. Apps bring color to Android’s operating system and are the reason why the Android ecosystem is thriving. From time to time, you may download an app, use it for a while, and then forget that it exists. Look at your Android device, and see how many apps you have. Now, try to remember the last time you used some of them. You may be shocked once you realize that you only used some of your apps one time, but they have been sitting on your phone for months. These apps take up space. If you have an unused app and you want to delete it, this tutorial will show you how to uninstall Android apps.
If you have an Android device that is malfunctioning, the most common way to fix this issue is by performing a hard reset. A hard reset deletes all of the device’s data, including apps you have installed, and returns the phone to its original settings, just as it was when it was first released from the factory. However, a hard reset should always be a last resort. There is a better way to deal with a device that goes on a boot loop, freezes, or is just slow. Sometimes, problems encountered on a device are due to incompatible or buggy applications that were recently installed. Testing your Android through Safe mode should be considered before performing any reset or before taking your device to a service center. This tutorial outlines how to fix malfunctions by booting into Safe Mode on Android.
Safe Mode for Android phones is a diagnostic mode that helps you determine the source of the error that is causing your Android device to get stuck, restart, go on a boot loop, run slow, or freeze. If you have just installed a third-party app on your HTC phone and you are experiencing problems, then trying to fix these issues by booting into Safe Mode is recommended before performing a reset or having your device checked by a service center. This tutorial shows how to put your HTC phones in Safe Mode.