Multiple rows
On dialects that support it (for example PostgreSQL) you can insert multiple
rows by providing an array. Note that the return value is once again very
dialect-specific. Some databases may only return the id of the last inserted
row and some return nothing at all unless you call returning.
More examples
The API documentation is packed with examples. The API docs are hosted here but you can access the same documentation by hovering over functions/methods/classes in your IDE. The examples are always just one hover away!
For example, check out these sections: