From: Johannes Plunien <plu@cpan.org>
Date: Tue, 7 Apr 2009 14:15:32 +0000 (+0000)
Subject: Added caveat notes to dual trick in cookbook
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=336256bc90f8b0493251c4fd7d88c3cdf02f636c;p=dbsrgits%2FDBIx-Class-Historic.git

Added caveat notes to dual trick in cookbook
---

diff --git a/lib/DBIx/Class/Manual/Cookbook.pod b/lib/DBIx/Class/Manual/Cookbook.pod
index 03db014..fae1e94 100644
--- a/lib/DBIx/Class/Manual/Cookbook.pod
+++ b/lib/DBIx/Class/Manual/Cookbook.pod
@@ -1167,6 +1167,18 @@ Or use C<cursor>
   while (my @vals = $cursor->next) {
     print $vals[0]."\n";
   }
+
+In case you're going to use this "trick" together with L<DBIx::Class::Schema/deploy> or
+L<DBIx::Class::Schema/create_ddl_dir> a table called "dual" will be created in your
+current schema. This would overlap "sys.dual" and you could not fetch "sysdate" or
+"sequence.nextval" anymore from dual. To avoid this problem, just tell
+L<SQL::Translator> to not create table dual:
+
+    my $sqlt_args = {
+        add_drop_table => 1,
+        parser_args    => { sources => [ grep $_ ne 'Dual', schema->sources ] },
+    };
+    $schema->create_ddl_dir( [qw/Oracle/], undef, './sql', undef, $sqlt_args );
  
 Or use L<DBIx::Class::ResultClass::HashRefInflator>