| * | * |
|---|---|
| 链接 | SQL Basics: Simple NULL handling |
| 难度 | 7kyu |
| 状态 | √ |
| 日期 | 2019-4-3 |
题意
题解1
select age , count(people) as people_count
from people
group by age
| * | * |
|---|---|
| 链接 | SQL Basics: Simple NULL handling |
| 难度 | 7kyu |
| 状态 | √ |
| 日期 | 2019-4-3 |
select age , count(people) as people_count
from people
group by age题意 题解1
题意 题解1
题意 题解1
题意 题解1
题意 题解1
题意 题解1 题解2-wrong 题解-LZY
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本文标题：SQL Basics: Simple NULL handling
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