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

which network aired more shows about characters with hiv than cbs ?
SELECT "network" FROM table_203_293 GROUP BY "network" HAVING COUNT("character name") > (SELECT COUNT("character name") FROM table_203_293 WHERE "network" = 'cbs')
SELECT "network" FROM "table_203_293" GROUP BY "network" HAVING COUNT("character name") > (SELECT COUNT("character name") FROM "table_203_293" WHERE "network" = 'cbs')