...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
Prepares a statement server-side.
statement prepare_statement( string_view stmt, error_code& err, diagnostics& diag);
stmt
should be encoded
using the connection's character set.
The returned statement has valid() == true
.