CREATE TABLE table_204_422 (id DECIMAL, "rank" DECIMAL, "lane" DECIMAL, "name" TEXT, "nationality" TEXT, "time" TEXT, "notes" TEXT)

at the women 's 200 meter individual medley sm10 event at the 2012 summer paralympics , how many people participated in total ?
SELECT COUNT("name") FROM table_204_422
SELECT COUNT("name") FROM "table_204_422"