摘要:
创建表格 hive> CREATE TABLE student(id INT, name STRING) ROW FORMAT DELIMITED FIELDS TERMINATED BY '\t'; 导入数据 load data local inpath '/home/testData/dataT 阅读全文
摘要:
case 1、例: select u.uid,case when u.birthday>='1990' and u.birthday<='1999' then '90 后' when u.birthday>='1980' and u.birthday<='1989' then '80 后' when 阅读全文