CREATE TABLE "doubles_7" (
  "edition" text,
  "round" text,
  "date" text,
  "partnering" text,
  "against" text,
  "surface" text,
  "opponents" text,
  "w_l" text,
  "result" text
);

Question: What date was the result 6–2, 4–6, 6–4?
SQL: SELECT "date" FROM "doubles_7" WHERE "result"='6–2, 4–6, 6–4';

Question: How many matches had the result of 6–3, 6–2?
SQL: SELECT COUNT("partnering") FROM "doubles_7" WHERE "result"='6–3, 6–2';