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SpringBoot Series Tutorial Mybatis+Annotations Integration The previous blog post described SpringBoot's process of integrating mybatis, but the way xml works always feels a bit frustrating; this article introduces a noxml usage posture that supports CURD purely with annotations <!-- more --> I. Environment This article uses SpringBoot ...

#The problem of displaying only n consecutive rows for query results in mysql# A problem encountered on the collar button: finding the display of 3 consecutive lines of results that meet the conditions X city built a new stadium, each day many people visit it and the stats are saved as these columns: id, date, people； Please write a query to d ...

mybatis integration springboot Guide Pack <dependency>     <groupId>org.mybatis.spring.boot</groupId>     <artifactId>mybatis-spring-boot-starter</artifactId>     <version>1.3.2</version> </dependency> <dependency>     <groupId>mysql</groupId>     <artifactId>mysql ...

I created a database, such as'mydb'. CREATE DATABASE mydb CHARACTER SET utf8 COLLATE utf8_bin; CREATE USER 'myuser'@'%' IDENTIFIED BY PASSWORD '*HASH'; GRANT ALL ON mydb.* TO 'myuser'@'%'; GRANT ALL ON mydb TO 'myuser'@'%'; GRANT CREATE ON mydb TO 'myuser'@'%'; FLUSH PRIVILEGES; Now I can log in to the database from anywhere, but I can't ...

thinking 1. My idea is to save JDBC connection thread with a linked list. When a connection calls the close method, it also proves that the life of the connection thread is ending, so the connection is recycled through the reflection agent. Add a new connection thread at. 2. When we get the connection to the thread pool, ge ...

1. Install mysql database, and configure the mysql installation directory bin directory to the system environment variable 2, command mysqldump -h (IP) - p (port number) - u (user name) - p (password) - default character set = utf8 database name > where to back up to the local disk Column: mysqldump - h192.168.1.10 - p330 ...

MySQL table defragmentation 1. Calculate fragment size 2. Defragment 2.1 use the alter table table_name engine = innodb command to organize. 2.2 the PT online schema change tool can also be used to organize table structure and collect fragments online. 2.3 use the optimize table command to defragment. 1. Calculate fragment size To defra ...

New spring boot project, dependent <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jpa</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-jdbc&l ...

After MySQL is installed, an include directory and a lib directory are generated under mysql. The include directory holds the header file, and the lib is the dynamic link library. Copy mysql.h under include / to / usr/include, and copy libmysqlclient.so and libmysqlclient.so.18 under lib / to / usr/lib64. The writing program ne ...

1. Connect to mysql database To connect to mysql in python, you need to import the pymysql module first import pymysql # Connect to mysql database--- # User name, password, host name, port number # host = None, con specifies the host name, ip address, 127.0.0.1 and localhost represents the host # user = None, specify user na ...