Life is a progress and not a station.
You got things to do. Place to go. People to see. Futures to make.
September 30, 2020
July 9, 2020
Python例子:通过max()和min()获取可比较数据集(如列表, 集合或数组)中的最大元素或最小元素。
max()
min()
July 8, 2020
Devise默认的unlock逻辑在数据量较大的情况下,unlock会出现慢查询的问题。
July 1, 2020
About require files in Ruby.
June 30, 2020
最近Kylin Cube Build异常缓慢,经调查后发现是构建全局字典这一步导致的,为解决此问题,进行了如下调研。(思路较乱,持续改进中)
June 24, 2020
最近在解决Kylin全局字典的构建问题时,考虑将度量(IP地址)的字符类型转换为整数类型,以此来避免全局字典构建的限制。关于IP地址与整数的转换,在Hive的解决方案中,可以通过SQL将IP地址直接转换成整数,不过目前仅支持IPV4。
June 23, 2020
May 22, 2020
背景透明在不同场景中可以使用opcatiy或者rgba函数实现。
May 21, 2020
How to get “User Agent” in a request?
May 20, 2020
Sometimes, in SQL, we need to order with a special sequence, like the order of an array.