=back
-While the L<join> attribute will join a table without including the tables
-columns in the select, prefetch will add the columns to the select spec at
-the same time. This attribute is a shorthand for specifying a L</join> spec,
-adding all columns from the joined related sources as L</+columns> and setting
-L</collapse> to a true value. For example, the following two queries are
+This attribute is a shorthand for specifying a L</join> spec, adding all
+columns from the joined related sources as L</+columns> and setting
+L</collapse> to a true value. It can be thought of as a rough B<superset>
+of the L</join> attribute.
+
+For example, the following two queries are
equivalent:
my $rs = $schema->resultset('Artist')->search({}, {