createtable student (
id int,
name varchar(20),
age int,
sex varchar(5),
address varchar(100),
math int,
english int);insertinto student
(id,name,age,sex,address,math,english)values(1,'马云',55,'男','杭州',66,78),(2,'马化腾',45,'女','深圳',98,87),(3,'马景涛',55,'男','香港',56,77),(4,'柳岩',20,'女','湖南',76,65),(5,'柳青',20,'男','湖南',86,NULL),(6,'刘德华',57,'男','香港',99,99),(7,'玛德',22,'女','香港',99,99),(8,'德玛西亚',18,'男','南京',56,65);
题目:各个视频的平均完播率 DROP TABLE IF EXISTS tb_user_video_log, tb_video_info;
CREATE TABLE tb_user_video_log (id INT PRIMARY KEY AUTO_INCREMENT COMMENT 自增ID,uid INT NOT NULL COMMENT 用户ID,video_id INT NOT NULL COMMENT 视频ID,start_time dat…
继上一篇博文,我们解决了多模块下扫描不到子模块的原因,建议先看上一个博客了解项目结构:
springboot 多模块启动报错Field XXX required a bean of type XXX that could not be found. 接下来我们来解决swaggar异常的原因,我们成功启动项目…
完整报错
type mismatch;found : Int(100)required: Object
Note: an implicit exists from scala.Int > java.lang.Integer, but
methods inherited from Object are rendered ambiguous. This is to avoid
a blanket implicit which would convert any scala.Int to a…
Problem: 2684. 矩阵中移动的最大次数 复杂度
⏰ 时间复杂度: O ( n m ) O(nm) O(nm)
🌎 空间复杂度: O ( n m ) O(nm) O(nm)
Code
class Solution {
public int maxMoves(int[][] grid){int n grid.length;int m grid[0].length;int[][] f new int[n][m]…
本文目录 本系列文章目标开发步骤数据库表设计初始数据初始数据:AccountCategories初始数据:AccountUsages初始数据:ChartOfAccounts初始数据:AccountSubjects Service 定义生成Fiori AppApp运行 本系列文章
SAP CAP篇一: 快速创…