• Distinct precision_threshold depends on ES or you can specify by second parameters.When you have lot of shards, 40000  consume too much memory. 
  
• select,groupBy now support functions and field alias 
  
• nested function is also available,eg.  split(substring('newtype',0,3),'c')[0]
  
• Binary operation support now, eg.  floor(substring(newtype,0,14)/100)/5)*5
  

• floor
  
• split
  
• trim
  
• log
  
• log10
  
• substring
  
• round
  
• sqrt
  
• concat_ws
  
• +
  
• -
  
• * 
  
• /
  
• %
  

org.nlpcn.es4sql.Test

SELECT newtype as nt  from  twitter2 

SELECT sum(num) as num2,newtype as nt  
from  twitter2 
group by nt  order by num2 

SELECT sum(num_d) as num2,split(newtype,',') as nt  
from  twitter2 
group by nt  
order by num2

SELECT sum(num_d) as num2,floor(num) as nt  
from  twitter2 
group by floor(num),newtype  
order by num2

SELECT split('newtype','b')[1] as nt,sum(num_d) as num2   
from  twitter2 
group by nt

SELECT split(substring('newtype',0,3),'c')[0] as nt,num_d   
from  twitter2 
group by nt

SELECT trim(newtype) as nt 
from  twitter2


SELECT floor(floor(substring(time,0,14)/100)/5)*5 as nt,
count(distinct(mid)) as cvalue 
FROM twitter2  
where ty='buffer' and day='20160815' and domain='baidu.com' 
group by nt 
order by cvalue