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

who was the last character on bbc to be hiv positive ?
SELECT "character name" FROM table_203_293 WHERE "network" = 'bbc' ORDER BY "years of appearance" DESC LIMIT 1
SELECT "character name" FROM "table_203_293" WHERE "network" = 'bbc' ORDER BY "years of appearance" DESC FETCH FIRST 1 ROWS ONLY