text: -- func.test
  -- 
  -- execsql {
  --     CREATE TABLE t4(x);
  --     INSERT INTO t4 VALUES(test_destructor('hello'));
  --     INSERT INTO t4 VALUES(test_destructor('world'));
  --     SELECT min(test_destructor(x)), max(test_destructor(x)) FROM t4;
  -- }
  CREATE TABLE t4(x);
  INSERT INTO t4 VALUES(test_destructor('hello'));
  INSERT INTO t4 VALUES(test_destructor('world'));
  SELECT min(test_destructor(x)), max(test_destructor(x)) FROM t4;