CREATE TABLE table_204_332 (id NUMBER, "administrative\ area" CLOB, "area\ km2" NUMBER, "area\ sq mi" NUMBER, "population" NUMBER, "administrative\ centre" CLOB)

how many administrative center is there ?
SELECT COUNT(DISTINCT "administrative\ncentre") FROM table_204_332
SELECT COUNT(DISTINCT "administrative\ncentre") FROM "table_204_332"