SQLServer执行计划成本（续4）
SQLServer里3个写操作是INSERT、UPDATE和DELETE（IUD）。如果加上约束、触发器和外键，写操作可以变得更复杂。这里仅关心基本的写操作。对于3个操作中的每一个，对于堆表和有聚集索引的表来说都有不同的图标，如图2-31、2-32和2-33所示。
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Fix: Google Chrome update check failed with error code 3: 0x80040154
Apr 13, 2023 pm 05:46 PM
Google Chrome is one of the most popular browsers in the world and many users prefer to use it as the default browser on their Windows PCs. Chrome offers a wide range of features that make the browsing experience enjoyable and effortless, and therefore, it remains one of the most trusted browsers. But just like any other browser, even Chrome has its own shortcomings, and it's equally prone to bugs and glitches when you need it most. One such error is Error Code 3: 0x80040154, which occurs while checking for Google Chrome updates. The error message reads "An error occurred while checking for updates. The update check failed to start (Error code 3: 0x80080005) or (Error
What is the delete key on the keyboard?
Mar 16, 2023 pm 04:48 PM
There are two keyboard delete keys: del (delete) key and backspace key. Backspace is also called the backspace key. This key can delete the text content in front of the cursor; and the delete key can delete characters, files and selected objects. Each time you press the del key, a character to the right of the cursor will be deleted, and the character to the right of the cursor will move one frame to the left; when one or more files/folders are selected, press the Del key to quickly delete; in some applications Select an object in the program and press the Del key to quickly delete the selected object.
What is the function of delete key
Mar 10, 2023 pm 06:07 PM
The functions of the delete key are: 1. Delete characters; each time the delete key is pressed, a character to the right of the cursor will be deleted, and the character to the right of the cursor will move one frame to the left. 2. Delete files; when one or more files/folders are selected, press the Delete key to quickly delete them (move to the Recycle Bin for recovery). 3. Delete the selected object; select an object in some applications and press the Delete key to quickly delete the selected object.
How to enable/disable VS Code automatic updates
Apr 28, 2023 am 09:28 AM
If you are using Visual Studio Code (VSCode) and thinking about how to disable its automatic software updates and how to disable the automatic updates of its extensions, then read this article. If you don't use VSCode often, open the editor after a long period of time and want to enable automatic updates, this article will also guide you in doing so. Let us discuss in detail the different ways to enable or disable VSCode automatic updates. Table of Contents Method One: Use Settings to Enable/Disable VSCode Automatic Updates Step 1: Open VS Code and click the gear-shaped symbol in the lower left corner. Step 2: Click Settings in the list that appears. Step 3: Type update in the search bar and hit enter. Find Updates: Pattern 4
KDE Plasma 6.1 brings many enhancements to the popular Linux desktop
Jun 23, 2024 am 07:54 AM
After several pre-releases, the KDE Plasma development team unveiled version 6.0 of its desktop environment for Linux and BSD systems on 28 February, using the Qt6 framework for the first time. KDE Plasma 6.1 now comes with a number of new features t
How to Control + Alt + Delete: Mac Tutorial
Apr 16, 2023 pm 12:37 PM
Control+Alt+Delete: "Mac" mode Ctrlaltdel is a common key combination used by Windows users to open Task Manager. They usually exit unwanted applications from the manager menu to free up some space on their computer. The Control+Alt+Delete Mac variant lets you open the Force Quit menu. If Mac users want to quit the program causing the problem or view open programs, they can interact with the menu to investigate further. How to perform ControlAltDelete on Mac? If you have any malfunctioning applications, you must use this key combination to
Solution to high CPU usage of Microsoft compatibility telemetry
Mar 16, 2024 pm 10:16 PM
When we use the win10 system, we sometimes encounter situations where the computer becomes stuck. Then when we check the background process, we find that a Microsoftcompatibilitytelemetry process takes up a particularly high amount of resources. So what is going on? Users can try to uninstall the third-party protection software and then try a clean boot to operate. Let this site carefully introduce to users the solution to the high CPU usage of Microsoftcompatibilitytelemetry. Solution to the high CPU usage of Microsoftcompatibilitytelemetry Method 1: Try after uninstalling the third-party protection software
What is the difference between insert ignore, insert and replace in mysql
May 29, 2023 pm 04:40 PM
The difference between insertignore, insert and replace instructions already exist or not. Example of insert error. Insertintonames(name,age)values("Xiao Ming", 23); insertignore ignores insertignoreintonames(name, age)values("Xiao Ming", 24); replace Replace and insert replaceintonames(name,age)values("Xiao Ming", 25); table requirements: PrimaryKey, or unique index result: the table id will be automatically incremented. Test code creates table
