text: -- pagerfault.test
  -- 
  -- execsql { 
  --      BEGIN;
  --        UPDATE t1 SET x=x+4 WHERE x=1;
  --        SAVEPOINT one;
  --          UPDATE t1 SET x=x+4 WHERE x=2;
  --          SAVEPOINT three;
  --            UPDATE t1 SET x=x+4 WHERE x=3;
  --            SAVEPOINT four;
  --              UPDATE t1 SET x=x+4 WHERE x=4;
  --          RELEASE three;
  --      COMMIT;
  --      SELECT DISTINCT x FROM t1;
  -- }
  BEGIN;
    UPDATE t1 SET x=x+4 WHERE x=1;
    SAVEPOINT one;
      UPDATE t1 SET x=x+4 WHERE x=2;
      SAVEPOINT three;
        UPDATE t1 SET x=x+4 WHERE x=3;
        SAVEPOINT four;
          UPDATE t1 SET x=x+4 WHERE x=4;
      RELEASE three;
  COMMIT;
  SELECT DISTINCT x FROM t1;
  
  
  