当前位置：网站首页>[Niu Ke brush questions-SQL big factory interview questions] NO5. Analysis of a treasure store (e-commerce model)
[Niu Ke brush questions-SQL big factory interview questions] NO5. Analysis of a treasure store (e-commerce model)
2022-08-04 13:03:00 【IT Bond】
体系化学习SQL,请到牛客经典高频面试题库,参加实训,提高你的SQL技能吧~
https://www.nowcoder.com/link/pc_csdncpt_itbd_sql
SQL180 某宝店铺的SPU数量
建表语句
drop table if exists product_tb;
CREATE TABLE product_tb(
item_id char(10) NOT NULL,
style_id char(10) NOT NULL,
tag_price int(10) NOT NULL,
inventory int(10) NOT NULL
);
INSERT INTO product_tb VALUES('A001', 'A', 100, 20);
INSERT INTO product_tb VALUES('A002', 'A', 120, 30);
INSERT INTO product_tb VALUES('A003', 'A', 200, 15);
INSERT INTO product_tb VALUES('B001', 'B', 130, 18);
INSERT INTO product_tb VALUES('B002', 'B', 150, 22);
INSERT INTO product_tb VALUES('B003', 'B', 125, 10);
INSERT INTO product_tb VALUES('B004', 'B', 155, 12);
INSERT INTO product_tb VALUES('C001', 'C', 260, 25);
INSERT INTO product_tb VALUES('C002', 'C', 280, 18);
需求
请你统计每款的SPU（货号）数量,并按SPU数量降序排序
答案
select style_id,count(item_id) as SPU_num
from product_tb
group by style_id
order by SPU_num desc
SQL181 某宝店铺的实际销售额与客单价
建表语句
drop table if exists sales_tb;
CREATE TABLE sales_tb(
sales_date date NOT NULL,
user_id int(10) NOT NULL,
item_id char(10) NOT NULL,
sales_num int(10) NOT NULL,
sales_price int(10) NOT NULL
);
INSERT INTO sales_tb VALUES('2021-11-1', 1, 'A001', 1, 90);
INSERT INTO sales_tb VALUES('2021-11-1', 2, 'A002', 2, 220);
INSERT INTO sales_tb VALUES('2021-11-1', 2, 'B001', 1, 120);
INSERT INTO sales_tb VALUES('2021-11-2', 3, 'C001', 2, 500);
INSERT INTO sales_tb VALUES('2021-11-2', 4, 'B001', 1, 120);
INSERT INTO sales_tb VALUES('2021-11-3', 5, 'C001', 1, 240);
INSERT INTO sales_tb VALUES('2021-11-3', 6, 'C002', 1, 270);
INSERT INTO sales_tb VALUES('2021-11-4', 7, 'A003', 1, 180);
INSERT INTO sales_tb VALUES('2021-11-4', 8, 'B002', 1, 140);
INSERT INTO sales_tb VALUES('2021-11-4', 9, 'B001', 1, 125);
INSERT INTO sales_tb VALUES('2021-11-5', 10, 'B003', 1, 120);
INSERT INTO sales_tb VALUES('2021-11-5', 10, 'B004', 1, 150);
INSERT INTO sales_tb VALUES('2021-11-5', 10, 'A003', 1, 180);
INSERT INTO sales_tb VALUES('2021-11-6', 11, 'B003', 1, 120);
INSERT INTO sales_tb VALUES('2021-11-6', 10, 'B004', 1, 150);
需求
请你统计实际总销售额与客单价（人均付费,总收入/总用户数,结果保留两位小数）
答案
select sum(sales_price) as sales_total,
round(sum(sales_price)/count(distinct user_id),2) as per_trans
from sales_tb
SQL182 某宝店铺折扣率
建表语句
drop table if exists product_tb;
CREATE TABLE product_tb(
item_id char(10) NOT NULL,
style_id char(10) NOT NULL,
tag_price int(10) NOT NULL,
inventory int(10) NOT NULL
);
INSERT INTO product_tb VALUES('A001', 'A', 100, 20);
INSERT INTO product_tb VALUES('A002', 'A', 120, 30);
INSERT INTO product_tb VALUES('A003', 'A', 200, 15);
INSERT INTO product_tb VALUES('B001', 'B', 130, 18);
INSERT INTO product_tb VALUES('B002', 'B', 150, 22);
INSERT INTO product_tb VALUES('B003', 'B', 125, 10);
INSERT INTO product_tb VALUES('B004', 'B', 155, 12);
INSERT INTO product_tb VALUES('C001', 'C', 260, 25);
INSERT INTO product_tb VALUES('C002', 'C', 280, 18);
drop table if exists sales_tb;
CREATE TABLE sales_tb(
sales_date date NOT NULL,
user_id int(10) NOT NULL,
item_id char(10) NOT NULL,
sales_num int(10) NOT NULL,
sales_price int(10) NOT NULL
);
INSERT INTO sales_tb VALUES('2021-11-1', 1, 'A001', 1, 90);
INSERT INTO sales_tb VALUES('2021-11-1', 2, 'A002', 2, 220);
INSERT INTO sales_tb VALUES('2021-11-1', 2, 'B001', 1, 120);
INSERT INTO sales_tb VALUES('2021-11-2', 3, 'C001', 2, 500);
INSERT INTO sales_tb VALUES('2021-11-2', 4, 'B001', 1, 120);
INSERT INTO sales_tb VALUES('2021-11-3', 5, 'C001', 1, 240);
INSERT INTO sales_tb VALUES('2021-11-3', 6, 'C002', 1, 270);
INSERT INTO sales_tb VALUES('2021-11-4', 7, 'A003', 1, 180);
INSERT INTO sales_tb VALUES('2021-11-4', 8, 'B002', 1, 140);
INSERT INTO sales_tb VALUES('2021-11-4', 9, 'B001', 1, 125);
INSERT INTO sales_tb VALUES('2021-11-5', 10, 'B003', 1, 120);
INSERT INTO sales_tb VALUES('2021-11-5', 10, 'B004', 1, 150);
INSERT INTO sales_tb VALUES('2021-11-5', 10, 'A003', 1, 180);
INSERT INTO sales_tb VALUES('2021-11-6', 11, 'B003', 1, 120);
INSERT INTO sales_tb VALUES('2021-11-6', 10, 'B004', 1, 150);
需求
请你统计折扣率（GMV/吊牌金额,GMV指的是成交金额）,折扣率保留两位小数：
' 答案
select
round(sum(sales_price)*100/sum(sales_num*tag_price),2) discount_rate
from sales_tb left join product_tb using(item_id)
SQL183 某宝店铺动销率与售罄率
建表语句
drop table if exists product_tb;
CREATE TABLE product_tb(
item_id char(10) NOT NULL,
style_id char(10) NOT NULL,
tag_price int(10) NOT NULL,
inventory int(10) NOT NULL
);
INSERT INTO product_tb VALUES('A001', 'A', 100, 20);
INSERT INTO product_tb VALUES('A002', 'A', 120, 30);
INSERT INTO product_tb VALUES('A003', 'A', 200, 15);
INSERT INTO product_tb VALUES('B001', 'B', 130, 18);
INSERT INTO product_tb VALUES('B002', 'B', 150, 22);
INSERT INTO product_tb VALUES('B003', 'B', 125, 10);
INSERT INTO product_tb VALUES('B004', 'B', 155, 12);
INSERT INTO product_tb VALUES('C001', 'C', 260, 25);
INSERT INTO product_tb VALUES('C002', 'C', 280, 18);
drop table if exists sales_tb;
CREATE TABLE sales_tb(
sales_date date NOT NULL,
user_id int(10) NOT NULL,
item_id char(10) NOT NULL,
sales_num int(10) NOT NULL,
sales_price int(10) NOT NULL
);
INSERT INTO sales_tb VALUES('2021-11-1', 1, 'A001', 1, 90);
INSERT INTO sales_tb VALUES('2021-11-1', 2, 'A002', 2, 220);
INSERT INTO sales_tb VALUES('2021-11-1', 2, 'B001', 1, 120);
INSERT INTO sales_tb VALUES('2021-11-2', 3, 'C001', 2, 500);
INSERT INTO sales_tb VALUES('2021-11-2', 4, 'B001', 1, 120);
INSERT INTO sales_tb VALUES('2021-11-3', 5, 'C001', 1, 240);
INSERT INTO sales_tb VALUES('2021-11-3', 6, 'C002', 1, 270);
INSERT INTO sales_tb VALUES('2021-11-4', 7, 'A003', 1, 180);
INSERT INTO sales_tb VALUES('2021-11-4', 8, 'B002', 1, 140);
INSERT INTO sales_tb VALUES('2021-11-4', 9, 'B001', 1, 125);
INSERT INTO sales_tb VALUES('2021-11-5', 10, 'B003', 1, 120);
INSERT INTO sales_tb VALUES('2021-11-5', 10, 'B004', 1, 150);
INSERT INTO sales_tb VALUES('2021-11-5', 10, 'A003', 1, 180);
INSERT INTO sales_tb VALUES('2021-11-6', 11, 'B003', 1, 120);
INSERT INTO sales_tb VALUES('2021-11-6', 10, 'B004', 1, 150);
需求
请你统计每款的动销率（pin_rate,有销售的SKU数量/在售SKU数量）与售罄率（sell-through_rate,GMV/备货值,备货值=吊牌价*库存数）,按style_id升序排序
答案
select
style_id
,round(sum(t2.sales_num)/(sum(inventory)-sum(t2.sales_num))*100,2) pin_rate
,round(sum(sales_price)/sum(tag_price*inventory)*100,2) sell_rate
from product_tb t1 join
(select
item_id
,sum(sales_num) sales_num
,sum(sales_price) sales_price
from sales_tb
group by item_id) t2
using(item_id)
group by style_id
order by style_id
SQL184 某宝店铺连续2天及以上购物的用户及其对应的天数
建表语句
drop table if exists sales_tb;
CREATE TABLE sales_tb(
sales_date date NOT NULL,
user_id int(10) NOT NULL,
item_id char(10) NOT NULL,
sales_num int(10) NOT NULL,
sales_price int(10) NOT NULL
);
INSERT INTO sales_tb VALUES('2021-11-1', 1, 'A001', 1, 90);
INSERT INTO sales_tb VALUES('2021-11-1', 2, 'A002', 2, 220);
INSERT INTO sales_tb VALUES('2021-11-1', 2, 'B001', 1, 120);
INSERT INTO sales_tb VALUES('2021-11-2', 3, 'C001', 2, 500);
INSERT INTO sales_tb VALUES('2021-11-2', 4, 'B001', 1, 120);
INSERT INTO sales_tb VALUES('2021-11-3', 5, 'C001', 1, 240);
INSERT INTO sales_tb VALUES('2021-11-3', 6, 'C002', 1, 270);
INSERT INTO sales_tb VALUES('2021-11-4', 7, 'A003', 1, 180);
INSERT INTO sales_tb VALUES('2021-11-4', 8, 'B002', 1, 140);
INSERT INTO sales_tb VALUES('2021-11-4', 9, 'B001', 1, 125);
INSERT INTO sales_tb VALUES('2021-11-5', 10, 'B003', 1, 120);
INSERT INTO sales_tb VALUES('2021-11-5', 10, 'B004', 1, 150);
INSERT INTO sales_tb VALUES('2021-11-5', 10, 'A003', 1, 180);
INSERT INTO sales_tb VALUES('2021-11-6', 11, 'B003', 1, 120);
INSERT INTO sales_tb VALUES('2021-11-6', 10, 'B004', 1, 150);
需求
请你统计连续2天及以上在该店铺购物的用户及其对应的次数（若有多个用户,按user_id升序排序）
答案
select user_id,
count(diff) date_cnt
from
(select user_id,
sales_date - rk diff
from
(select user_id,
sales_date,
rank() over(partition by sales_date) rk
from (select distinct user_id,sales_date from sales_tb)aa )a) b
group by user_id
having date_cnt>=2
边栏推荐
- 【VSCode】一文详解vscode下安装vim后无法使用Ctrl+CV复制粘贴 使用Vim插件的配置记录
- 从零开始配置 vim(7)——自动命令
- 【WeChat Mini Program】Social Internship Production Project for Information Management and Information System Major--Trash Fingerprint
- 21天学习挑战赛--第二天打卡（setSystemUiVisibility、导航栏、状态栏）
- TS---类型设置
- router---Route guard
- Ceres库运行，模板内报内存冲突问题。（已解决）
- “蔚来杯“2022牛客暑期多校训练营3 C
- Two years of independent development experience Programmers tell us the experience of making money (listen to the masters who really make money)
- du命令_set命令选项
猜你喜欢
![LeetCode 1403 非递增顺序的最小子序列[贪心] HERODING的LeetCode之路](/img/fd/c827608b96f678a67c7e920c51d8c5.png)
随机推荐
[UML] Summary of Information System Analysis and Design Knowledge Points
绩效考核带给员工的不能只是压力
LeetCode 1403 非递增顺序的最小子序列[贪心] HERODING的LeetCode之路
du命令_set命令选项
nVisual二次开发——第二章 nVisual API操作指南Swagger使用
Cool and efficient data visualization big screen, it's really not that difficult to do!丨Geek Planet
"Social Enterprises Conducting Civilian Personnel Training Specifications" group standard on the shelves of Xinhua Bookstore
RK1126编译gdb 板子上gdb调试程序
ReentrantLock 原理
Motion Regulations (18) - and check the basic questions - gang
鲜花“刺客”收割七夕
Ultra-QuickSort
面试官：如何查看/etc目录下包含abc字符串的文件？
js正则表达式提取内容
5 cloud security management strategies enterprises should implement
使用SQLServer复制数据库
“蔚来杯“2022牛客暑期多校训练营5 B、C、F、G、H、K
Interviewer: Tell me the difference between NIO and BIO
【VSCode】一文详解vscode下安装vim后无法使用Ctrl+CV复制粘贴 使用Vim插件的配置记录
String is a reference type