| 16 | } |
| 17 | |
| 18 | void select(database& db, bool should_be_null) { |
| 19 | db << "select id,val from test" >> [&](long long, std::optional<int> val) { |
| 20 | if(should_be_null) { |
| 21 | if(val) exit(EXIT_FAILURE); |
| 22 | } else { |
| 23 | if(!val) exit(EXIT_FAILURE); |
| 24 | } |
| 25 | }; |
| 26 | } |
| 27 | |
| 28 | int main() { |
| 29 | try { |