{
prefetch => 'books',
order_by => { -asc => \['name + ?', [ test => 'xxx' ]] }, # test bindvar propagation
+ group_by => [ map { "me.$_" } $schema->source('Owners')->columns ], # the literal order_by requires an explicit group_by
rows => 3, # 8 results total
unsafe_subselect_ok => 1,
},