allOf function
Requires every predicate to be SQL TRUE; an empty group is TRUE.
The iterable is consumed once when this expression is built. SQL NULL
retains its three-valued meaning. Use collection if and for elements
to construct dynamic groups, and anyOf for alternatives.
Implementation
Expr<bool?> allOf(Iterable<Expr<bool?>> predicates) =>
_predicateGroup(predicates, 'AND', true);