CREATE TABLE table_19188562_2 (tv_season VARCHAR2, rating__adults_18_49_ VARCHAR2)

How many tv series had an adult rating of 1.2?
SELECT COUNT(tv_season) FROM table_19188562_2 WHERE rating__adults_18_49_ = "1.2"
SELECT COUNT("tv_season") FROM "table_19188562_2" WHERE "1.2" = "rating__adults_18_49_"