...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
Returns the name of the database (schema) the column belongs to.
string_view database() const;
This is optional information - it won't be populated unless the connection
executing the query has meta_mode() == metadata_mode::full
.
No-throw guarantee.
The returned reference is valid as long as *this
is alive and hasn't been assigned to
or moved from.