题目描述
英文版描述
Given a positive integer n, generate an n x n matrix filled with elements from 1 to n(2) in spiral order.
Example 1: Input: n 3
Output: [[1,2,3],[8,9,4],[7,6,5]]
提示: 1 < n < 20
英文版地址
https://leetcode.com…
高级语句
窗口函数 排序窗口函数
例题二十九 select yr,party,votes,
rank() over (PARTITION BY yr ORDER BY votes desc) as pson
from ge
where constituency S14000021
order by party,yr
偏移分析函数
例题三十 select name,date_format(whn,%Y-%m-%d) data,
confi…