record.setBlob1(generateRandomBlob());
record.setBlob2(generateRandomBlob());
mapper.insert(record);
FieldsblobsExample example = new FieldsblobsExample();
List<Fieldsblobs> answer = mapper.selectByExample(example);
assertEquals(2, answer.size());
example = new FieldsblobsExample();
example.createCriteria().andFirstnameLike("S%");
int rows = mapper.deleteByExample(example);