Course Elementary  2634

Course Introduction：If you have any questions, add WeChat: Le-studyg; the course content includes the basic principles of MySQL master-slave replication, the data synchronization mechanism during the replication process, the configuration and management of the replication topology, the high availability and fault tolerance of the master-slave replication, and the replication process. Data consistency and conflict handling, etc. Through an in-depth analysis of the underlying implementation of MySQL8 master-slave replication, you will understand key mechanisms such as data flow, log transmission, and status synchronization during the replication process, and learn how to optimize and adjust the performance and stability of master-slave replication.

Course Intermediate  11310

Course Introduction："MySQL Data Management Backup and Recovery Case Analysis Video Tutorial" MySQL is an open source small-scale relational database management system. Currently, MySQL is widely used in small and medium-sized websites on the Internet. Due to its small size, fast speed, low total cost of ownership, and especially the characteristics of open source, many small and medium-sized websites choose MySQL as their website database in order to reduce the total cost of website ownership.

Course Intermediate  11429

Course Introduction："Self-study IT Network Linux Load Balancing Video Tutorial" mainly implements Linux load balancing by performing script operations on web, lvs and Linux under nagin.

Course Advanced  17724

Course Introduction："Shangxuetang MySQL Video Tutorial" introduces you to the process from installing to using the MySQL database, and introduces the specific operations of each link in detail.

Course Introduction：ThinkPHP6 form repeated submission processing: preventing repeated operations In web application development, form submission is a common operation. However, sometimes users may submit forms repeatedly due to network delays or misoperations, which may cause some problems to the system. In order to solve this problem, we can perform repeated form submission processing in the ThinkPHP6 framework to prevent users from repeated operations. 1. Cause analysis There are two main reasons for repeated submission of forms: 1. Network delay: When the user clicks the submit button, the form

2023-08-12 comment 0  2056

Course Introduction：After opening the Excel file, select the area that needs to be searched for duplicates, and click the duplicate item menu in [Featured Functions]. A dialog box will pop up to confirm whether the area is correct. If it is correct, click OK. After clicking OK, the duplicate items will be highlighted. Disable duplicate entries Select columns that do not allow duplicate entries, for example: Column C. Click the duplicate item menu, and after confirmation, a prompt will appear for the user to select related operations when entering duplicate items.

2024-04-17 comment 0  1235

Course Introduction：During the development process, queue is a very practical data structure. When using queues, you may encounter some problems, such as how to implement no repeat queue. In many scenarios, we need to add elements to the queue, but if the element already exists in the queue, we need to ignore it to avoid adding duplicate elements. At this time, we need to use a non-duplicate queue. In Golang, we can use map to implement non-duplicate queues. Specifically, we can

2023-05-15 comment 0  658

Course Introduction：MySQL is a commonly used relational database management system with powerful functions and flexible performance. When using MySQL, we often encounter duplicate data in data tables, which not only affects the accuracy of the data, but also brings trouble to query and analyze the data. Therefore, when processing data in MySQL, it is often necessary to delete duplicate data. This article will introduce how to use SQL statements to remove duplicate data in MySQL. 1. Find duplicate records. Before deleting duplicate data, we need to first find duplicate records in the data table.

2023-05-18 comment 0  999

Course Introduction： mysql怎么删除重复记录表名是tongxunlu 字段是id sXingMing sXingBie dtShengRi因为重复插入了，几份数据，想删除重复的 mysql

2016-06-13 comment 0  909