if err := DB.Model(&users).Association("Languages").Delete(users[0].Languages[0], users[1].Languages[1]); err != nil {
		t.Errorf("no error should happened when deleting language, but got %v", err)
	}

	AssertAssociationCount(t, users, "Languages", 2, "after delete")

	// Clear
	DB.Model(&users).Association("Languages").Clear()

	AssertEqual(t, lastUpdatedAt.UnixNano(), users[1].UpdatedAt.UnixNano())

	// user2 should not be updated
	var user1, user2 User
	DB.First(&user1, users[0].ID)
	DB.First(&user2, users[1].ID)
	CheckUser(t, user1, *users[0])
	CheckUser(t, user2, *users[1])

	DB.Model(users[1]).UpdateColumn("name", "update_column_02_newnew").UpdateColumn("age", 19)
	AssertEqual(t, lastUpdatedAt.UnixNano(), users[1].UpdatedAt.UnixNano())

app.include_router(user_router, prefix="/users")
app.include_router(item_router, prefix="/items")

app.include_router(item_router, prefix="/users/{user_id}/items")


client = TestClient(app)


def test_get_users():
    """Check that /users returns expected data"""
    response = client.get("/users")
    assert response.status_code == 200, response.text

	)

	AssertAssociationCount(t, users, "Pets", 5, "After Append")

	// Delete
	if err := DB.Model(&users).Association("Pets").Delete(&users[2].Pets); err != nil {
		t.Errorf("no error should happened when deleting pet, but got %v", err)
	}

	AssertAssociationCount(t, users, "Pets", 4, "after delete")

	if err := DB.Model(&users).Association("Pets").Delete(users[0].Pets[0], users[1].Pets[1]); err != nil {

from pydantic import BaseModel

app = FastAPI()

reusable_oauth2 = OAuth2(
    flows={
        "password": {
            "tokenUrl": "token",
            "scopes": {"read:users": "Read the users", "write:users": "Create users"},
        }
    },
    description="OAuth2 security scheme",
    auto_error=False,
)


class User(BaseModel):
    username: str

		},
	}
	DB.Create(&user)

	type UserScan struct {
		ID        uint
		Name      string
		ManagerID *uint
	}
	var user2 UserScan
	err := DB.Raw("SELECT * FROM users INNER JOIN users Manager ON users.manager_id = Manager.id WHERE users.id = ?", user.ID).Scan(&user2).Error
	AssertEqual(t, err, nil)

from pydantic import BaseModel

app = FastAPI()

reusable_oauth2 = OAuth2(
    flows={
        "password": {
            "tokenUrl": "token",
            "scopes": {"read:users": "Read the users", "write:users": "Create users"},
        }
    }
)


class User(BaseModel):
    username: str


# Here we use string annotations to test them
def get_current_user(oauth_header: "str" = Security(reusable_oauth2)):

	} else if len(users2) != len(users) {
		t.Fatalf("Failed to load join users, got: %v, expect: %v", len(users2), len(users))
	}

	sort.Slice(users2, func(i, j int) bool {
		return users2[i].ID > users2[j].ID
	})

	sort.Slice(users, func(i, j int) bool {
		return users[i].ID > users[j].ID
	})

	for idx, user := range users {
		// user
		CheckUser(t, user, users2[idx])

		}
	}
	return
}

// Limit specify the number of records to be retrieved
//
// Limit conditions can be cancelled by using `Limit(-1)`.
//
//	// retrieve 3 users
//	db.Limit(3).Find(&users)
//	// retrieve 3 users into users1, and all users into users2
//	db.Limit(3).Find(&users1).Limit(-1).Find(&users2)
func (db *DB) Limit(limit int) (tx *DB) {
	tx = db.getInstance()
	tx.Statement.AddClause(clause.Limit{Limit: &limit})

			} else if u2.Name != users[1].Name || u2.ID != users[1].ID {
				t.Errorf("found invalid user, got %v, expect %v", u2, users[1])
			}

			if users, err := reusedb.Where("id IN ?", []uint{users[0].ID, users[1].ID}).Find(ctx); err != nil {
				t.Errorf("failed to find user, got error: %v", err)
			} else if len(users) != 2 {
				t.Errorf("should find 2 users, but got %d", len(users))
			}
			sg.Done()
		}()
	}
	sg.Wait()
}