From: Peter Rabbitson <ribasushi@cpan.org>
Date: Fri, 4 Dec 2009 10:47:22 +0000 (+0000)
Subject: Smarter implementation of the select top 100pct subselect handling
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=b90669955d5e91f63981d01aefc9b252fde4e373;p=dbsrgits%2FDBIx-Class-Historic.git

Smarter implementation of the select top 100pct subselect handling
---

diff --git a/lib/DBIx/Class/Storage/DBI/MSSQL.pm b/lib/DBIx/Class/Storage/DBI/MSSQL.pm
index cfbc634..28b87f2 100644
--- a/lib/DBIx/Class/Storage/DBI/MSSQL.pm
+++ b/lib/DBIx/Class/Storage/DBI/MSSQL.pm
@@ -185,11 +185,21 @@ sub last_insert_id { shift->_identity }
 sub _select_args_to_query {
   my $self = shift;
 
+  # _select_args does some shady action at a distance
+  # see DBI.pm for more info
   my $sql_maker = $self->sql_maker;
-  my ($op, $bind, $ident, $bind_attrs, $select, $cond, $order) = $self->_select_args(@_);
+  my ($op, $bind, $ident, $bind_attrs, $select, $cond, $order, $rows, $offset);
+  {
+    local $sql_maker->{_dbic_rs_attrs};
+    ($op, $bind, $ident, $bind_attrs, $select, $cond, $order, $rows, $offset) = $self->_select_args(@_);
+  }
 
-  if (not scalar $sql_maker->_order_by_chunks ($order->{order_by}) ) {
-    # no ordering, just short circuit
+  if (
+    ($rows || $offset)
+      ||
+    not scalar $sql_maker->_order_by_chunks ($order->{order_by})
+  ) {
+    # either limited RS or no ordering, just short circuit
     return $self->next::method (@_);
   }