postgresql libpqxx Several queries as one transaction

Question

Is it possible to execute one transaction contains several queries, for example insert smth in table1 and insert smth in table2? How I can implement this? I use libpqxx to interact the database and expect an answer relating to that. Thank you.

Answer 1

pqxx::work is a default transaction type. Use multiple exec() method before commit() to run multiple queries in one transaction:

using namespace pqxx;
...
  connection c("dbname=test user=postgres hostaddr=127.0.0.1");
  work w(c);
  w.exec("create table test_xx (id int primary key)");
  w.exec("insert into test_xx values (1)");
  w.commit();
...