Hive Quick Note

1. open info log level:
bin/hive -hiveconf hive.root.logger=INFO,console

2. HIVE weird query result:
1> Where '='   comparing two things with different types. Would return result not error 

3. hive CLI 
echo "use bi_thunder; select * from tmp_kfb_task1_4;" | ./hv > ~/gfan/111

4. show create table table_name;will show the script that creates the table;