Table: steeler_1979_season
Columns: week
date
kickoff_et
opponent
result
record
game_site

Question: What is the total number of weeks that the Steelers had a record of 1–0?
SQL: SELECT COUNT("week") FROM steeler_1979_season WHERE "record" = '1–0'

Question: Who was the opponent at the Steelers game that had a result of l 20–17?
SQL: SELECT "opponent" FROM steeler_1979_season WHERE "result" = 'l 20–17'