var user User db.Preload("Orders").First(&user)
var user User db.Preload("Orders.OrderDetails").First(&user)
var user User db.Preload("Orders").Preload("Profile").First(&user)This example shows how to preload both the "Orders" and "Profile" associations for the "User" model in a single SQL statement. Package library: "github.com.jinzhu.gorm" is a popular package library for working with SQL databases in Go, which provides features like ORM, associations, migrations, and more. The gorm.DB.Preload function is a part of this library and can be used to efficiently fetch associated data from the database.