CREATE TABLE table_204_135 (id NUMBER, "position" NUMBER, "club" CLOB, "played" NUMBER, "points" NUMBER, "wins" NUMBER, "draws" NUMBER, "losses" NUMBER, "goals for" NUMBER, "goals against" NUMBER, "goal difference" NUMBER)

what is the difference between the points earned by cordoba and the points earned by cd villarrobledo ?
SELECT ABS((SELECT "points" FROM table_204_135 WHERE "club" = 'cordoba cf') - (SELECT "points" FROM table_204_135 WHERE "club" = 'cd villarrobledo'))
SELECT ABS((SELECT "points" FROM "table_204_135" WHERE "club" = 'cordoba cf') - (SELECT "points" FROM "table_204_135" WHERE "club" = 'cd villarrobledo'))