哪位大侠能够一条sql语句执行更新多条记录,该如何解决
哪位大侠能够一条sql语句执行更新多条记录
id num
1 1
2 2
3 4
4 8
表名test
最终结果
id为1的， 更新为2
id为2的，更新为3
id为3的，更新为6
id为4的，更新为11
------解决方案--------------------
如果不是相同的是无法一起更新的.看看有没其他神奇的写法吧
Hot AI Tools
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Undress AI Tool
Undress images for free
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
1667
14
1426
52
1328
25
1273
29
1255
24
Huawei Watch GT 5 smartwatch gets update with new features
Oct 03, 2024 am 06:25 AM
Huawei is rolling out software version 5.0.0.100(C00M01) for the Watch GT 5 and the Watch GT 5 Prosmartwatchesglobally. These two smartwatches recently launched in Europe, with the standard model arriving as the company’s cheapest model. This Harmony
Tekken\'s Colonel Sanders dream fried by KFC
Oct 02, 2024 am 06:07 AM
Katsuhiro Harada, the Tekken series director, once seriously tried to bring Colonel Sanders into the iconic fighting game. In an interview with TheGamer, Harada revealed that he pitched the idea to KFC Japan, hoping to add the fast-food legend as a g
New Xiaomi Mijia Graphene Oil Heater with HyperOS arrives
Oct 02, 2024 pm 09:02 PM
Xiaomi will shortly launch the Mijia Graphene Oil Heater in China. The company recently ran a successful crowdfunding campaign for the smart home product, hosted on its Youpin platform. According to the page, the device has already started to ship to
How to use AWS Glue crawler with Amazon Athena
Apr 09, 2025 pm 03:09 PM
As a data professional, you need to process large amounts of data from various sources. This can pose challenges to data management and analysis. Fortunately, two AWS services can help: AWS Glue and Amazon Athena.
MySQL and SQL: Essential Skills for Developers
Apr 10, 2025 am 09:30 AM
MySQL and SQL are essential skills for developers. 1.MySQL is an open source relational database management system, and SQL is the standard language used to manage and operate databases. 2.MySQL supports multiple storage engines through efficient data storage and retrieval functions, and SQL completes complex data operations through simple statements. 3. Examples of usage include basic queries and advanced queries, such as filtering and sorting by condition. 4. Common errors include syntax errors and performance issues, which can be optimized by checking SQL statements and using EXPLAIN commands. 5. Performance optimization techniques include using indexes, avoiding full table scanning, optimizing JOIN operations and improving code readability.
Manjaro 24.1 \'Xahea\' launches with KDE Plasma 6.1.5, VirtualBox 7.1, and more
Oct 02, 2024 am 06:06 AM
With a history of over one decade, Manjaro is regarded as one of the most user-friendly Linux distros suitable for both beginners and power users, being easy to install and use. Mostly developed in Austria, Germany, and France, this Arch-based distro
The Purpose of SQL: Interacting with MySQL Databases
Apr 18, 2025 am 12:12 AM
SQL is used to interact with MySQL database to realize data addition, deletion, modification, inspection and database design. 1) SQL performs data operations through SELECT, INSERT, UPDATE, DELETE statements; 2) Use CREATE, ALTER, DROP statements for database design and management; 3) Complex queries and data analysis are implemented through SQL to improve business decision-making efficiency.
phpMyAdmin SQL Mastery: Advanced Querying and Data Manipulation Techniques
Apr 07, 2025 am 12:15 AM
phpMyAdmin can perform advanced query and data operations through the following methods: 1. Use JOIN operations to combine multiple table data, such as combining customer and order tables. 2. Use subqueries to nest queries to filter data of specific conditions. 3. Use window functions to perform data analysis, such as ranking customer orders. 4. Use the EXPLAIN command to optimize query performance, avoid common errors and improve efficiency.
