Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE player ( pid number, pname text, ycard text, hs number )
TABLE: CREATE TABLE college ( cname text, state text, enr number )
TABLE: CREATE TABLE tryout ( pid number, cname text, ppos text, decision text )

### Question ###
What is the maximum training hours for the students whose training hours is greater than 1000 in different positions?

### Accurate SQL ###

SELECT MAX(T1.hs), ppos FROM player AS T1 JOIN tryout AS T2 ON T1.pid = T2.pid WHERE T1.hs > 1000 GROUP BY T2.ppos