public class Animal {
public void eat() { System.out.println("I eat like a generic Animal."); }
}
public class Wolf extends Animal {
@Override
public void eat() { System.out.println
我已經列定義爲： not null default uuid_generate_v4()
，當我嘗試插入NULL值，我得到錯誤： DBD::Pg::st execute failed: ERROR: null value in column "uuid" violates not-null constraint
代碼： INSERT INTO files(uuid, storage, t
import math
import random
import time
Start = False
print ("Welcome to my first ever RPG! created 10/07/2016")
time.sleep(2)
begin = raw_input("Would you like to start the game?")
if begin