CREATE TABLE table_203_645 (id NUMBER, "lower mississippi periods" CLOB, "lower yazoo phases" CLOB, "lower yazoo\ dates" CLOB, "tensas/natchez phases" CLOB, "cahokia phases" CLOB, "cahokia dates" CLOB, "ohio/miss. river\ confluence phases" CLOB, "ohio/miss. dates" CLOB)

what is the name of the last cahokia phase ?
SELECT "cahokia phases" FROM table_203_645 ORDER BY id DESC LIMIT 1
SELECT "cahokia phases" FROM "table_203_645" ORDER BY "id" DESC FETCH FIRST 1 ROWS ONLY