步骤:
1.创建一个dual表
hive> create table dual(dummy string);
2.
创建/home/hadoop/djt/dual.txt
echo 'X'>>/home/hadoop/djt/dual.txt
3.把dual.txt导入dual表
hive> load data local inpath '/home/hadoop/djt/dual.txt' into table dual;
4.测试
hive> select length('aades') from dual; OK 5
