PompeiiMassacre

Using ubuntu [basic]   install python (come with os)   install Intellij Idea (gotta install jdk first)   install Django(install pip or easy_install first)

<canvas id="tankMap" width="400px" height="300px" style="background-color:black"></canvas>   //得到画布 var canvas1=document.getElementById("tankMap"); //得到绘图上下文(你可以理解是画笔) var

__author__ = 'YJatt' # if both n1 and n2's inputs are 1+2,no quotation marks attached n1 = input("this is a expression : ") n2 = raw_input("this is always a string : ") print n1 #print 3 ...

select as 之后，列名还是原来的。   index view join   SQL 教程   SQL SELECT DISTINCT 比如有两种国家，三个条目，那么返回的就是两个国家（if you “select distinct country from table_name"） SQL WHERE select * from customers where c...