How many total batting partners were most successful in the 2006 season?
CREATE TABLE "top_10_test_partnerships_for_any_wicket" (
  "runs" text,
  "wicket" text,
  "batting_partners" text,
  "batting_team" text,
  "fielding_team" text,
  "venue" text,
  "season" text
);
SELECT COUNT("batting_partners") FROM "top_10_test_partnerships_for_any_wicket" WHERE "season"='2006';