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 table_name_36 ( round INTEGER, overall VARCHAR, pick VARCHAR )

### Question ###
What is the highest round that has an overall of 143 and a pick greater than 6?

### Accurate SQL ###

SELECT MAX(round) FROM table_name_36 WHERE overall = 143 AND pick > 6