CREATE TABLE table_24894 ("Ch \\u2116" CLOB, "Channel" CLOB, "Channel content" CLOB, "Transmission" CLOB, "Format" CLOB, "Launch Date" CLOB, "Licence" CLOB)

How many launch dates are there for digital transmission?
SELECT COUNT("Launch Date") FROM table_24894 WHERE "Transmission" = 'Digital'
SELECT COUNT("Launch Date") FROM "table_24894" WHERE "Transmission" = 'Digital'