摘要: 10.员工薪水中位数 需求:请编写SQL查询来查找每个公司的薪水中位数 结果展示: Id Company Salary 5 A 451 6 A 513 12 B 234 9 B 1154 14 C 2645 建表语句: Create table If Not Exists Employee (Id 阅读全文
posted @ 2021-06-21 22:23 青聪 阅读(56) 评论(0) 推荐(0)
摘要: MemStore 详解 Store A Store hosts a MemStore and 0 or more StoreFiles (HFiles). A Store corresponds to a column family for a table for a given region. 多 阅读全文
posted @ 2021-06-21 19:18 青聪 阅读(184) 评论(0) 推荐(0)