Table: pga_tour_1990
Columns: date
tournament
location
winner
score
1st_prize

Question: What was the date of the tournament in Scotland with a score of 270 (–18)?
SQL: SELECT "date" FROM pga_tour_1990 WHERE "score" = '270 (–18)' AND "location" = 'scotland'

Question: Where was the tournament won by Hale Irwin (19)?
SQL: SELECT "location" FROM pga_tour_1990 WHERE "winner" = 'hale irwin (19)'