初始化Go学习项目

go-gorm-demo/transaction_savepoint.go

@@ -0,0 +1,37 @@
+package main
+
+import (
+	"fmt"
+
+	"gorm.io/driver/sqlite"
+	"gorm.io/gorm"
+)
+
+//type User struct {
+//	ID    uint   `gorm:"primaryKey"`
+//	Name  string `gorm:"size:100"`
+//	Email string `gorm:"size:100;unique"`
+//}
+
+func main() {
+	db, _ := gorm.Open(sqlite.Open("test.db"), &gorm.Config{})
+	db.AutoMigrate(&User{})
+
+	db.Transaction(func(tx *gorm.DB) error {
+		tx.Create(&User{Name: "Alice", Email: "alice@example.com"})
+
+		// 创建 SavePoint
+		tx.SavePoint("sp1")
+		tx.Create(&User{Name: "Bob", Email: "bob@example.com"})
+
+		// 回滚到 SavePoint
+		tx.RollbackTo("sp1")
+
+		return nil
+	})
+
+	// 检查结果
+	var count int64
+	db.Model(&User{}).Count(&count)
+	fmt.Printf("Total users: %d (should be 1, only Alice)\n", count)
+}