摘要:
转自:https://blog.csdn.net/lele5000/article/details/89856355 给hive表新增了三个字段,重新insert overwrite了历史有数据的分区,但是select 新增字段仍然没有数据,值一直为NULL,莫名其妙 我的修改表结构的sql是这样子 阅读全文
摘要:
136. Single Number Given a non empty array of integers, every element appears twice except for one. Find that single one. Note: Your algorithm should 阅读全文