CREATE TABLE table_203_293 (id NUMBER, "years of appearance" CLOB, "title" CLOB, "network" CLOB, "character name" CLOB, "actor" CLOB, "notes" CLOB)

what was the last show aired by abc ?
SELECT "title" FROM table_203_293 WHERE "network" = 'abc' ORDER BY "years of appearance" DESC LIMIT 1
SELECT "title" FROM "table_203_293" WHERE "network" = 'abc' ORDER BY "years of appearance" DESC FETCH FIRST 1 ROWS ONLY