What shareholders have 0 A shares?
CREATE TABLE "scania_ab_publ_principal_shareholders" (
  "shareholder_name" text,
  "a_shares" real,
  "b_shares" real,
  "pct_of_capital" text,
  "pct_of_votes" text
);
SELECT "shareholder_name" FROM "scania_ab_publ_principal_shareholders" WHERE "a_shares"=0;