>
hive入门篇
hive> desc mytest;
OK
num int
name string
Time taken: 0.087 seconds
hive> select * from mytest;
NULL NULL
22 world
33 hive
hive> select * from mytest a join mytest b on a.num=b.num;
22 world 22 world
33 hive 33 hive
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