CREATE TABLE table_203_756 (id NUMBER, "year" NUMBER, "title" CLOB, "role" CLOB, "network" CLOB, "notes" CLOB)

how long until there was an appearance on the cts network ?
SELECT (SELECT MIN("year") FROM table_203_756 WHERE "network" = 'cts') - (SELECT MIN("year") FROM table_203_756)
SELECT (SELECT MIN("year") FROM "table_203_756" WHERE "network" = 'cts') - (SELECT MIN("year") FROM "table_203_756")