CREATE TABLE table_30580 ("Pick #" FLOAT, "Player" TEXT, "Position" TEXT, "Nationality" TEXT, "NHL team" TEXT, "College/junior/club team" TEXT)

How many college/junior/club teams are ther when nhl team is edmonton oilers?
SELECT COUNT("College/junior/club team") FROM table_30580 WHERE "NHL team" = 'Edmonton Oilers'
SELECT COUNT("College/junior/club team") FROM "table_30580" WHERE "NHL team" = 'Edmonton Oilers'