Create a DBIOAction that always fails.
Create a DBIOAction that runs some other actions in sequence and combines their results with the given function.
Future to a DBIOAction.
A simpler version of
sequence that takes a number of DBIOActions with any return type as
varargs and returns a DBIOAction that performs the individual actions in sequence (using
() in the end.
TraversableOnce[ DBIO[R] ] into a
DBIO[ TraversableOnce[R] ].
Lift a constant value to a DBIOAction.