CREATE TABLE "former_teams" (
  "team" text,
  "sport" text,
  "league" text,
  "established" real,
  "began_in_st_louis" real,
  "venue" text,
  "championships_in_st_louis" text,
  "left_st_louis" real
);

Question: What year did Negro American League join?
SQL: SELECT MIN("began_in_st_louis") FROM "former_teams" WHERE "league"='Negro American League';

Question: What year did the team who played at the Scottrade Center leave the city?
SQL: SELECT MIN("left_st_louis") FROM "former_teams" WHERE "venue"='Scottrade Center';

Question: How may championships were won by the team that started in 1950?
SQL: SELECT "championships_in_st_louis" FROM "former_teams" WHERE "began_in_st_louis"=1950;

Question: How many championships were won for arena football?
SQL: SELECT "championships_in_st_louis" FROM "former_teams" WHERE "sport"='Arena Football';