}
}

func TestGaussDBAlterColumnDataType(t *testing.T) {
	if DB.Dialector.Name() != "gaussdb" {
		t.Skip()
	}
	DB.Migrator().DropTable(&Company{})
	DB.AutoMigrate(Company{})
	if err := DB.Table("companies").Migrator().AlterColumn(CompanyNew{}, "name"); err != nil {
		t.Fatalf("failed to alter column from string to int, got error %v", err)
	}

	DB.AutoMigrate(Company{})

type Association struct {
	DB           *DB
	Relationship *schema.Relationship
	Unscope      bool
	Error        error
}

func (db *DB) Association(column string) *Association {
	association := &Association{DB: db, Unscope: db.Statement.Unscoped}
	table := db.Statement.Table

	if association.Error = db.Statement.Parse(db.Statement.Model); association.Error == nil {
		db.Statement.Table = table

	user := *GetUser("hasmany", Config{Pets: 2})

	if err := DB.Create(&user).Error; err != nil {
		t.Fatalf("errors happened when create: %v", err)
	}

	CheckUser(t, user, user)

	// Find
	var user2 User
	DB.Find(&user2, "id = ?", user.ID)
	DB.Model(&user2).Association("Pets").Find(&user2.Pets)
	CheckUser(t, user2, user)

	var pets []Pet
	DB.Model(&user).Where("name = ?", user.Pets[0].Name).Association("Pets").Find(&pets)

					dest := db.Statement.Dest
					db.Statement.Dest = db.Statement.ReflectValue.Addr().Interface()
					gorm.Scan(rows, db, mode)
					db.Statement.Dest = dest
					db.AddError(rows.Close())

					if db.Statement.Result != nil {
						db.Statement.Result.RowsAffected = db.RowsAffected
					}
				}

						}

						if saveAssociations(db, rel, rv, selectColumns, restricted, nil) == nil {
							setupReferences(db.Statement.ReflectValue, rv)
						}
					}
				}
			}
		}
	}
}

func SaveAfterAssociations(create bool) func(db *gorm.DB) {
	return func(db *gorm.DB) {
		if db.Error == nil && db.Statement.Schema != nil {
			selectColumns, restricted := db.Statement.SelectAndOmitColumns(create, !create)

			v, ok := db.Statement.ColumnMapping[column]
			if ok {
				columns[i] = v
			}
		}
	}

	db.RowsAffected = 0

	switch dest := db.Statement.Dest.(type) {
	case map[string]interface{}, *map[string]interface{}:
		if initialized || rows.Next() {
			columnTypes, _ := rows.ColumnTypes()
			prepareValues(values, db, columnTypes, columns)

			db.RowsAffected++
			db.AddError(rows.Scan(values...))

	"sort"
	"time"

	"gorm.io/gorm/schema"
	"gorm.io/gorm/utils"
)

func initializeCallbacks(db *DB) *callbacks {
	return &callbacks{
		processors: map[string]*processor{
			"create": {db: db},
			"query":  {db: db},
			"update": {db: db},
			"delete": {db: db},
			"row":    {db: db},
			"raw":    {db: db},
		},
	}
}

// callbacks gorm callbacks manager
type callbacks struct {

	parent := Parent{}
	DB.Create(&parent)

	child := Child{ParentID: &parent.ID, Parent: &parent}
	DB.Create(&child)

	parent.FavChildID = child.ID
	parent.FavChild = &child
	DB.Save(&parent)

	var parent1 Parent
	DB.First(&parent1, parent.ID)
	AssertObjEqual(t, parent, parent1, "ID", "FavChildID")

	// Save and Updates is the same
	DB.Updates(&parent)
	DB.First(&parent1, parent.ID)

			}
		}
	}

	results, err = db.Preload("Pets", func(db gorm.PreloadBuilder) error {
		db.Order("name").LimitPerRecord(5)
		return nil
	}).Preload("Friends", func(db gorm.PreloadBuilder) error {
		db.Order("name")
		return nil
	}).Where("name in ?", names).Find(ctx)

	for _, result := range results {

import (
	"gorm.io/gorm"
)

func RawExec(db *gorm.DB) {
	if db.Error == nil && !db.DryRun {
		result, err := db.Statement.ConnPool.ExecContext(db.Statement.Context, db.Statement.SQL.String(), db.Statement.Vars...)
		if err != nil {
			db.AddError(err)
			return
		}

		db.RowsAffected, _ = result.RowsAffected()

		if db.Statement.Result != nil {
			db.Statement.Result.Result = result
			db.Statement.Result.RowsAffected = db.RowsAffected