CREATE TABLE table_50477 ("Player" TEXT, "Team" TEXT, "Matches" FLOAT, "Overs" FLOAT, "Economy Rate" FLOAT, "Wickets" FLOAT, "Average" FLOAT, "Strike Rate" FLOAT, "Best Bowling" TEXT)

What is the lowest overs of the Chennai Super Kings when the Economy Rate is less than 5.92 with a Best Bowling number of 2/17?
SELECT MIN("Overs") FROM table_50477 WHERE "Team" = 'chennai super kings' AND "Best Bowling" = '2/17' AND "Economy Rate" < '5.92'
SELECT MIN("Overs") FROM "table_50477" WHERE "Best Bowling" = '2/17' AND "Economy Rate" < '5.92' AND "Team" = 'chennai super kings'