what is the number of losses with draws less than 1 and 6.3% efficiency?
CREATE TABLE "coaches" (
  "name" text,
  "period" text,
  "wins" real,
  "draws" real,
  "losses" real,
  "efficiency_pct" text
);
SELECT AVG("losses") FROM "coaches" WHERE "efficiency_pct"='6.3%' AND "draws"<1;