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Article directory 4. PT table checksum to verify master-slave data 4.0 references and installation 4.1. Pt table checksum verification principle 4.2 notes and common parameters 4.2.1 precautions 4.2.2 description of common parameters 4.3 best practices 4.4 troubleshooting of common problems 4.4.1, ...

Find out the bank teller's account opening records within half an hour. See if there are 3 or more accounts opened within half an hour. A table is given, in which is the operation record of a teller. The structure of the table records is as follows: field data type Cid (customer id) int Ctime (t ...

Chapter 3 Using MySQL Article Directory Chapter 3 Using MySQL Connect Select Database Understanding databases and tables Summary Simple Records - MySQL will always - [English]Ben Forta You'll learn how to connect to and log in to MySQL, how to execute MySQL statements, and how to get information ...

[SQL from bit by bit Analysis series articles] is a bit by bit summary in actual development, from the simplest SQL query to comprehensive analysis query When analyzing SQL, related operations in mybatis and Hibernate will also be analyzedClick to view details This section describes inserting data in ...

The previous several articles have prepared the database and data, and now they will be developed later. Some of them may be different from others on the Internet. I did it for the first time, and all the functions have been realized. This article is about development, registration and login. First, pas ...

At present, MHA (Master High Availability) is a relatively mature solution in the aspect of MySQL high availability. In the process of MySQL failover, MHA can automatically complete the database failover operation within 0-30 seconds, and in the process of failover, MHA can guarantee the consistency of data to the greatest extent, so as to ach ...

Author: ye Jinrong, co-founder of zhishutang, and co-founder of 3306pai community Preface What causes the util and iowait of disk I/O of online database server to keep soaring? 1. Problem description A friend Xiaoming's online database gave a serious alarm. The business side reported that writing data was blocked all the time. Many locks ro ...

Python crawler learning - crawl the public service platform of construction market supervision The code is only for learning and communication. Please do not use it for illegal purposes. In case of infringement, please click here Contact author delete The code is only for learning and communication ...

Article directory Basic concepts of Docker Docker installation Frequently used commands Container operation example Docker mirror image Docker container data volume Dockerfile Dockerfile architecture (reserved word instruction) Example of Docker installing mysql Push the local image to alicloud ...

Linux system, Apache, Mysql, PHP Ensure the existing development environment package before installing the configuration [root@localhost ~]# yum -y install pcre-devel zlib-devel links Turn off selinux and iptables [root@localhost ~]# vi /etc/selinux/config # Modify the configuration file and turn ...