How does the golang framework support database operations?

Database operations in Golang can use frameworks such as GORM, Go-pg and xorm. GORM is a powerful ORM framework that supports chained queries, automatic mapping, built-in connection pools, etc. Go-pg is designed for PostgreSQL and provides high performance and concurrency support. xorm is a lightweight ORM framework that provides simple API and transaction and batch processing support. Practical cases demonstrate the use of GORM for CRUD operations (create, read, update, delete).

Golang framework’s support for database operations

In Golang, there are a variety of frameworks that simplify interaction with databases, such as ：

GORM

GORM is a powerful ORM (Object Relational Mapping) framework that supports a variety of databases (such as MySQL, PostgreSQL), with the following features:

• Chained query construction
• Automated mapping and migration
• Built-in connection pool

Go-pg

Go-pg is a PostgreSQL-specific ORM framework. Its main features are:

• High performance
• Support concurrency
• Automated architecture migration

xorm

xorm is a lightweight ORM framework that supports a variety of databases. Features include:

• Simple API
• High performance
• Support transaction and batch processing

Practical case: using GORM for CRUD operations

The following is a usage Example of GORM CRUD (create, read, update, delete) operations:

package main

import (
    "database/sql"
    "fmt"
    "log"

    "github.com/jinzhu/gorm"
    _ "github.com/jinzhu/gorm/dialects/mysql" // mysql 驱动
)

type User struct {
    ID   int
    Name string
}

func main() {
    // 打开数据库连接
    db, err := sql.Open("mysql", "user:password@tcp(localhost:3306)/database")
    if err != nil {
        log.Fatal(err)
    }

    // 创建 GORM 实例
    gormDB, err := gorm.Open("mysql", db)
    if err != nil {
        log.Fatal(err)
    }

    // 自动迁移模型
    gormDB.AutoMigrate(&User{})

    // 创建
    user := User{Name: "John"}
    gormDB.Create(&user)

    // 读取
    var user2 User
    gormDB.First(&user2, "name = ?", "John")
    fmt.Println("User:", user2)

    // 更新
    user2.Name = "Jane"
    gormDB.Save(&user2)

    // 删除
    gormDB.Delete(&user2)
}

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