CREATE TABLE "season_by_season" (
  "season" text,
  "tier" real,
  "division" text,
  "pos" real,
  "postseason" text,
  "cup_competitions" text
);

Question: Which tier has a division of LEB 2 and Cup Competitions of Copa LEB Plata runner-up?
SQL: SELECT "tier" FROM "season_by_season" WHERE "division"='leb 2' AND "cup_competitions"='copa leb plata runner-up';

Question: How many positions have a Postseason of relegation playoffs and a tier of 3?
SQL: SELECT COUNT("pos") FROM "season_by_season" WHERE "postseason"='relegation playoffs' AND "tier"=3;

Question: What is the lowest tier for a postseason result of quarterfinalist?
SQL: SELECT MIN("tier") FROM "season_by_season" WHERE "postseason"='quarterfinalist';