How to store array in one column in Sqlite3?

Question

Is there any way to store an array of integers in one column of table? I want o/p like this:

ident | value                                                            


        

Answer 1

This is one way of serializing and deserializing data:

#include 
#include 
#include 
#include 

std::vector deserialize_array(std::string const &csv)
{
  std::istringstream parse(csv);
  std::vector ret;
  for(std::string token; std::getline(parse, token, ','); ret.push_back(token));
  return ret;
}

std::string serialize_array(std::string* array_ptr, std::size_t N)
{
  std::ostringstream cat;
  for(std::size_t index= 0; index< N; ++ index)
    cat<< array_ptr[index]<< ',';
  std::string ret= cat.str();
  return ret.substr(0, ret.size()-1);
}

int main()
{
  std::string data= "1,2,3";
  std::cout<< "Data: "<< data<< std::endl;
  std::vector deserialized= deserialize_array(data);
  std::string serialized= serialize_array(deserialized.data(), deserialized.size());
  std::cout<< "Serialized + Deserialized: "<< serialized<< std::endl;
}

Instead of spending time parsing parentheses and extra commas, you can serialize as csv and read two by two when processing the deserialized data.