text: select * from cadastro;
  
  select profissao, count(*) from cadastro
  group by profissao;
  
  select sexo, count(*) from cadastro
  where nascimento > '2005-01-01'
  group by sexo;
  
  select pais, count(*) from cadastro
  where pais != 'brasil'
  group by pais
  having count(pais) > '3';
  
  select count(*) from cadastro
  where peso > '100'
  group by altura
  having altura > (select avg(altura) from cadastro);