CREATE TABLE table_45258 ("Week" FLOAT, "Date" TEXT, "Opponent" TEXT, "Result" TEXT, "Attendance" TEXT)

What is the date for a week before 9, and a opponent of dallas cowboys?
SELECT "Date" FROM table_45258 WHERE "Week" < '9' AND "Opponent" = 'dallas cowboys'
SELECT "Date" FROM "table_45258" WHERE "Opponent" = 'dallas cowboys' AND "Week" < '9'