Q:

What is the default delimiter for Hive tables?

If we don't mention any delimiter while creating a table, is there any default delimiter hive takes?
create table logs (ts bigint, line string)
partitioned by (dt String, country String);

A:

The default delimiter   '\001'  if you havn't set when create a hivetable .
you can change it to  others delimiter .
for example 
hive> CREATE TABLE IF NOT EXISTS student1
    > (sno INT,sname STRING,age INT,sex STRING)
    > ROW FORMAT DELIMITED
    > FIELDS TERMINATED BY '\t'
    > STORED AS TEXTFILE;

