WW在搜寻
WW在搜寻
全部文章
分类
错题(1)
题解(59)
归档
标签
去牛客网
登录
/
注册
WW在搜寻的博客
全部文章
(共35篇)
题解 | #使用子模块实现三输入数的大小比较#
`timescale 1ns/1ns module main_mod( input clk, input rst_n, input [7:0]a, &nbs...
2022-06-15
0
200
题解 | #多功能数据处理器#
`timescale 1ns/1ns module data_select( input clk, input rst_n, input signed[7:0]a,//已经定义...
2022-06-15
1
240
题解 | #位拆分与运算#
`timescale 1ns/1ns module data_cal( input clk, input rst, input [15:0]d, input [1:0]sel, output [4:0]out, output validout ); //**code// /借鉴榜一大佬的说辞!!!!...
2022-06-12
0
212
题解 | #满足条件的用户的试卷完成数和题目练习数#
#先找高难度平均分大于90的用户id /SELECT er.uid FROM exam_record er JOIN examination_info ei ON er.exam_id=ei.exam_id WHERE ei.tag='SQL' AND ei.difficulty='hard' GR...
Mysql
2022-02-12
0
258
题解 | #分别满足两个活动的人#
SELECT * FROM (SELECT DISTINCT uid tid,'activity1' AS activity FROM exam_record WHERE YEAR(submit_time)=2021 AND score>=85 ) t1 UNION ALL SELECT * ...
Mysql
2022-02-09
0
230
题解 | #每个题目和每份试卷被作答的人数和次数#
SELECT* FROM ( SELECT exam_id,COUNT(DISTINCT uid) AS uv,COUNT(exam_id) AS pv FROM exam_record GROUP BY exam_id ORDER BY uv DESC,pv DESC) t1 UNION ALL ...
Mysql
2022-02-09
0
181
题解 | #作答试卷得分大于过80的人的用户等级分布#
SELECT ui.level,COUNT(ui.uid) AS level_cnt FROM user_info ui JOIN exam_record er ON ui.uid=er.uid WHERE er.exam_id IN (SELECT exam_id FROM examinatio...
Mysql
2022-02-08
0
214
题解 | #未完成试卷数大于1的有效用户#
SELECT er.uid AS uid, SUM(IF(er.submit_time IS NULL,1,0)) AS incomplete_cnt, SUM(IF(er.submit_time IS NOT NULL,1,0)) AS complete_cnt, GROUP_CONCAT(DIS...
Mysql
2022-01-21
0
251
题解 | #统计作答次数#
SELECT DATE_FORMAT(submit_time,'%Y%m') AS submit_month, COUNT() AS month_q_cnt, ROUND( COUNT() / avg(DAY(LAST_DAY(submit_time)) ),3 ) AS avg_day_q_...
Mysql
2022-01-21
0
295
题解 | #统计作答次数#
#GROUP BY MONTH(submit_time); select DATE_FORMAT(submit_time,'%Y%m') as month, ROUND((count(distinct uid,DATE_FORMAT(submit_time,'%y%m%d')))/ count(di...
Mysql
2022-01-20
0
213
首页
上一页
1
2
3
4
下一页
末页