CREATE TABLE table_17075 ("Player" CLOB, "Position" CLOB, "School" CLOB, "Hometown" CLOB, "College" CLOB)

How many schools did Derrick Green attend?
SELECT COUNT("School") FROM table_17075 WHERE "Player" = 'Derrick Green'
SELECT COUNT("School") FROM "table_17075" WHERE "Player" = 'Derrick Green'