CREATE TABLE "round_of_32" (
  "team_1" text,
  "agg" text,
  "team_2" text,
  "1st_leg" text,
  "2nd_leg" text
);

Question: What is Celta's Agg.?
SQL: SELECT "agg" FROM "round_of_32" WHERE "team_1"='celta';

Question: What is the 2nd leg for Barcelona Team 2?
SQL: SELECT "2nd_leg" FROM "round_of_32" WHERE "team_2"='barcelona';

Question: What is team 2 if Team 1 is Numancia?
SQL: SELECT "team_2" FROM "round_of_32" WHERE "team_1"='numancia';