CREATE TABLE table_204_753 (id NUMBER, "no." NUMBER, "name" CLOB, "position" CLOB, "date of birth  ( age ) " CLOB, "signed from" CLOB, "notes" CLOB)

what is the total number of df positions on the list ?
SELECT COUNT(*) FROM table_204_753 WHERE "position" = 'df'
SELECT COUNT(*) FROM "table_204_753" WHERE "position" = 'df'