CREATE TABLE table_name_39 (tournament VARCHAR2, margin_of_victory VARCHAR2, date VARCHAR2)

Which Tournament has a Margin of victory of 1 stroke, and a Date of oct 7, 1990?
SELECT tournament FROM table_name_39 WHERE margin_of_victory = "1 stroke" AND date = "oct 7, 1990"
SELECT "tournament" FROM "table_name_39" WHERE "1 stroke" = "margin_of_victory" AND "date" = "oct 7, 1990"