我有一张桌子，如下所示：
import turtle
import winsound
#window creation
wn = turtle.Screen()
wn.title("Classic Pong")
wn.bgcolor("blue")
wn.setup(width=800, height=600) # size in pixels
wn.tracer(0) #stops auto-update of winodw to speed up the game
#Score
score_a = 0
score_b = 0
#Arena
arena = turtle.Turtle()
arena.shape("square")
arena.color("orange")
arena.shapesize(stretch_wid=30, stretch_len=0.1)
arena.penup()
arena.goto(0, 0)
# Paddle A
paddle_a=turtle.Turtle() #turtle object
paddle_a.speed(0) #speed of animation
paddle_a.shape("square")
paddle_a.color("white")
paddle_a.shapesize(stretch_wid=5, stretch_len=1)
paddle_a.penup() #prevents the paddle from making a trace as it moves
paddle_a.goto(-350, 0)
#Paddle B
paddle_b=turtle.Turtle() #turtle object
paddle_b.speed(0) #speed of animation
paddle_b.shape("square")
paddle_b.color("white")
paddle_b.shapesize(stretch_wid=5, stretch_len=1)
paddle_b.penup() #prevents the paddle from making a trace as it moves
paddle_b.goto(350, 0)
#Ball
ball=turtle.Turtle() #turtle object
ball.speed(0) #speed of animation
ball.shape("square")
ball.color("white")
ball.penup() #prevents the paddle from making a trace as it moves
ball.goto(0, 0)
ball.dx = 0.2 # delta x (the ball will move 1 position)
ball.dy = -0.2
#Pen
pen = turtle.Turtle()
pen.speed(0)
pen.color("Orange")
pen.penup()
pen.hideturtle()
pen.goto(0, 260)
pen.write("Player A: 0 Player B: 0", align="center", font=("Fixedsys", 24, "normal"))
# Functions
def paddle_a_up():
y = paddle_a.ycor() #ycor returns y coordinate
y += 20
paddle_a.sety(y) #set y to the new y
def paddle_a_down():
y = paddle_a.ycor()
y -= 20
paddle_a.sety(y)
def paddle_b_up():
y = paddle_b.ycor()
y += 20
paddle_b.sety(y)
def paddle_b_down():
y = paddle_b.ycor()
y -= 20
paddle_b.sety(y)
#Keyboard binding
wn.listen() #listen for keyboard input
wn.onkeypress(paddle_a_up, "w") #when w is pressed paddle_a_up() is called
wn.onkeypress(paddle_a_down, "s")
wn.onkeypress(paddle_b_up, "Up") #up key
wn.onkeypress(paddle_b_down, "Down") #down key
# Main game loop
while True:
wn.update() #everytime the loop runs it updates the screen
#Moving the ball
ball.setx(ball.xcor() + ball.dx)
ball.sety(ball.ycor() + ball.dy)
#Border checking
#Top & bottom
if ball.ycor() > 290:
ball.sety(290)
ball.dy *=-1 #reverses direction
winsound.PlaySound("D:\Python\Pong_game_turtle\hit.wav", winsound.SND_ASYNC)
elif ball.ycor() < -290:
ball.sety(-290)
ball.dy *=-1
winsound.PlaySound("D:\Python\Pong_game_turtle\hit.wav", winsound.SND_ASYNC)
#Left and right
if ball.xcor() > 390:
ball.goto(0, 0)
ball.dx *=-1
score_a +=1
pen.clear()
pen.write("Player A: {} Player B: {}".format(score_a, score_b), align="center", font=("Fixedsys", 24, "normal"))
elif ball.xcor() < -390:
ball.goto(0, 0)
ball.dx *=-1
score_b +=1
pen.clear()
pen.write("Player A: {} Player B: {}".format(score_a, score_b), align="center", font=("Fixedsys", 24, "normal"))
#Paddle and ball collisions
#Right paddle
#Checking if the ball is in the area in front of the paddle, right at the paddle's surface
if (ball.xcor() > 340 and ball.xcor() < 350) and (ball.ycor() < paddle_b.ycor() + 40 and ball.ycor() > paddle_b.ycor() -40):
ball.setx(340)
ball.dx *= -1
winsound.PlaySound("D:\Python\Pong_game_turtle\hit.wav", winsound.SND_ASYNC)
if (ball.xcor() < -340 and ball.xcor() > -350) and (ball.ycor() < paddle_a.ycor() + 40 and ball.ycor() > paddle_a.ycor() -40):
ball.setx(-340)
ball.dx *= -1
winsound.PlaySound("D:\Python\Pong_game_turtle\hit.wav", winsound.SND_ASYNC)
我想选择并返回3列log (log_id, log_success (bool), log_created) date和success，其中前者在表中不存在，最后按天汇总它们。
我创建了以下查询：
no_success我可以通过此查询实现它吗？我的语法正确吗？
谢谢。
答案 0 :(得分：0)
如果要按此分组，必须选择DATE_FORMAT(log_created, '%Y-%m-%d')。
您也可以使用no_success
SUM(abs(log_success - 1))计数器
SELECT
DATE_FORMAT(log_created, '%Y-%m-%d') date,
SUM(log_success) log_success,
SUM(abs(log_success - 1)) no_success
FROM send_log
GROUP BY date;
请参见demo