join static method
Joins fragments using trusted SQL syntax. An empty collection is empty SQL;
callers must choose their own empty-list semantics for IN clauses.
Implementation
static Sql join(Iterable<Sql> parts, {String separator = ', '}) => Sql.parts([
for (final (index, part) in parts.indexed) ...[
if (index > 0) separator,
part,
],
]);