Perl-DBIC/SELECT 基本のバックアップ差分(No.4)

追加された行はこの色です。
削除された行はこの色です。

* SELECT - [[DBIx::Class::ResultSet>http://search.cpan.org/~ash/DBIx-Class-0.08006/lib/DBIx/Class/ResultSet.pm]][#ec0dd122]

** SEARCH [#u5289657]
 $rs = $c->model('DB::User')->search({address => 'tokyo'},{order_by => ['name', 'id']})
 $rs = $c->model('DB::User')->search({age => {'>=' => 20})
 $rs = $c->model('DB::User')->search({hobby => undef) # SQL:"hobby is null"

** IN [#md6dc17d]
 $c->model('DB::User')->search({user_id => {-in => \@user_ids}})

** JOIN （2つのテーブルと） [#s1746a0e]
 SELECT order.* FROM order JOIN order_detail ON order.id = order_detail.order_id 
 JOIN goods order_detail.goods_id = goods.id 
 WHERE goods.name = 'book'
 
 $rs = $c->model('DB::Order')->search({
  "goods.name" => 'book',
 },{ 
   join => {order_detail => 'goods'}
 });

** PREFETCH [#r9685ba3]
 $rs = $rs->search(undef,{prefetch => 'user', join => 'user'});
ジョインするテーブルをjoin=>'TABLE名'で明示する事。