SQL-practice

SQL 문제 풀이: 코딩 테스트 등등

Hackerrank

순서	제목	난이도	스터디	풀이여부
1	Revising the Select Query I	Easy	22.08.23	Y
2	Revising the Select Query II	Easy		Y
3	Select All	Easy		Y
4	Select By ID	Easy		Y
5	Japanese Cities' Attributes	Easy	22.08.30	Y
6	Japanese Cities' Names	Easy		Y
7	Weather Observation Station 1	Easy		Y
8	Weather Observation Station 3	Easy		Y
9	Weather Observation Station 4	Easy		Y
10	Weather Observation Station 5	Easy	22.09.06	Y
11	Weather Observation Station 6	Easy		Y
12	Weather Observation Station 7	Easy		Y
13	Weather Observation Station 8	Easy		Y
14	Weather Observation Station 9	Easy		Y
15	Weather Observation Station 10	Easy	22.09.13
16	Weather Observation Station 11	Easy
17	Weather Observation Station 12	Easy
18	Higher Than 75 Marks	Easy
19	Employee Names	Easy
20	Employee Salaries	Easy	22.09.20
21	Type of Triangle	Easy
22	The PADS	Medium
23	Revising Aggregations - The Count Function	Easy
24	Revising Aggregations - The Sum Function	Easy
25	Revising Aggregations - Averages	Easy
26	Average Population	Easy
27	Japan Population	Easy
28	Population Density Difference	Easy
29	The Blunder	Easy
30	Top Earners	Easy
31	Weather Observation Station 2	Easy
32	Weather Observation Station 13	Easy
33	Weather Observation Station 14	Easy
34	Weather Observation Station 15	Easy
35	Weather Observation Station 16	Easy
36	Weather Observation Station 17	Easy
37	Weather Observation Station 18	Medium
38	Weather Observation Station 19	Medium
39	Population Census	Easy
40	African Cities	Easy
41	Average Population of Each Continent	Easy

순서	제목	난이도
1	Weather Observation Station 5	Easy
2	Binary Tree Nodes	Medium
3	New Companies	Medium
4	Weather Observation Station 20	Medium
5	The Report	Medium
6	Top Competitors	Medium
7	Ollivander's Inventory	Medium
8	Challenges	Medium
9	Contest Leaderboard	Medium
10	SQL Project Planning	Medium
11	Placements	Medium
12	Symmetric Pairs	Medium
13	Interviews	Hard