CREATE TABLE "doubles_6_2_4" (
  "outcome" text,
  "date" text,
  "surface" text,
  "partner" text,
  "opponents" text,
  "score" text
);

Question: What was the surface when the opponent was sergiy stakhovsky mikhail youzhny?
SQL: SELECT "surface" FROM "doubles_6_2_4" WHERE "opponents"='sergiy stakhovsky mikhail youzhny';

Question: What was the score for the opponent lukáš dlouhý leander paes?
SQL: SELECT "score" FROM "doubles_6_2_4" WHERE "opponents"='lukáš dlouhý leander paes';

Question: What day was there a hard surface when the partner was Marc Gicquel?
SQL: SELECT "date" FROM "doubles_6_2_4" WHERE "surface"='hard' AND "partner"='marc gicquel';