CREATE TABLE table_22835602_1 (directed_by VARCHAR2, viewers__in_millions_ VARCHAR2)

List all directors from episodes with viewership of 1.945 million.
SELECT directed_by FROM table_22835602_1 WHERE viewers__in_millions_ = "1.945"
SELECT "directed_by" FROM "table_22835602_1" WHERE "1.945" = "viewers__in_millions_"