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_203_814 ( id number, "season" number, "head coach" text, "overall record" text, "conference record" text )

### Question ###
how many coaches served less seasons than bill manlove ?

### Accurate SQL ###

SELECT COUNT(*) FROM (SELECT "head coach" FROM table_203_814 GROUP BY "head coach" HAVING COUNT("season") < (SELECT COUNT("season") FROM table_203_814 WHERE "head coach" = 'bill manlove'))