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_27218002_1 ( episode__number INTEGER, written_by VARCHAR )

### Question ###
Name the least episode number for jonathan harvey

### Accurate SQL ###

SELECT MIN(episode__number) FROM table_27218002_1 WHERE written_by = "Jonathan Harvey"