linux - how to execute postgresql function with unnest array as parameter using libpqxx c++ -


i have created postgresql function,

create or replace function check4(interval_ int[],password_ text[])  returns void $$ begin      execute '       insert test(id,password)       select unnest($1),unnest($2)'    using $1,$2;   end; $$ language plpgsql;

then tried execute above procedure c++ using libpqxx

try     {         connection *conn;         conn = new connection("dbname = test user = postgres password = postgres hostaddr = 127.0.0.1 port = 5432");         if (conn->is_open()) {             cout<<"opened database successfully:"<<std::endl<<std::flush;         }         else {             cout << "can't open database" << std::endl << std::flush;          }          int arr_id[2] = { 1,2 };         string arr_pass[2] = { "hi","bye" };         work p(*conn);         conn->prepare("example", "select check4(unnest(:$1), unnest(:$2));");             (int = 0; < 2; i++)             {                 p.prepared("example")(arr_id[i])(arr_pass[i]).exec();             }          p.commit();         cout << "records created successfully" << endl;      }     catch (const std::exception &e) {         cerr << e.what() << std::endl;      }

in code, data inserted 1 one want data inserted in bulk.i want create array of 5000 records , insert in 1 shot.

please suggest me, how pass array parameter function? appreciated.

thank you.


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