CREATE TABLE table_19246_1 (standard VARCHAR, launch_date__ddmmyyyy_ VARCHAR)

How many standards are there, when the launch date was 17.04.2006?
SELECT COUNT(standard) FROM table_19246_1 WHERE launch_date__ddmmyyyy_ = "17.04.2006"
SELECT COUNT("standard") FROM "table_19246_1" WHERE "17.04.2006" = "launch_date__ddmmyyyy_"