From: Rafael Kitover <rkitover@cpan.org>
Date: Sun, 18 Oct 2009 09:13:29 +0000 (+0000)
Subject: Merge 'sybase_support' into 'trunk'
X-Git-Tag: v0.08113~32
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=25be6a7ef8a802690a388ab504554a444d1e497f;hp=746c315f6356bbe180b8bc738d85738f822687dd;p=dbsrgits%2FDBIx-Class.git

Merge 'sybase_support' into 'trunk'

r20728@hlagh (orig r7703):  ribasushi | 2009-09-20 18:51:16 -0400
Another try at a clean sybase branch
r20730@hlagh (orig r7705):  ribasushi | 2009-09-20 18:58:09 -0400
Part one of the sybase work by Caelum (mostly reviewed)
r20731@hlagh (orig r7706):  ribasushi | 2009-09-20 19:18:40 -0400
main sybase branch ready
r21051@hlagh (orig r7797):  caelum | 2009-10-18 04:57:43 -0400
 r20732@hlagh (orig r7707):  ribasushi | 2009-09-20 19:20:00 -0400
 Branch for bulk insert
 r20733@hlagh (orig r7708):  ribasushi | 2009-09-20 20:06:21 -0400
 All sybase bulk-insert code by Caelum
 r20750@hlagh (orig r7725):  caelum | 2009-09-24 02:47:39 -0400
 clean up set_identity stuff
 r20751@hlagh (orig r7726):  caelum | 2009-09-24 05:21:18 -0400
 minor cleanups, test update of blob to NULL
 r20752@hlagh (orig r7727):  caelum | 2009-09-24 08:45:04 -0400
 remove some duplicate code
 r20753@hlagh (orig r7728):  caelum | 2009-09-24 09:57:58 -0400
 fix insert with all defaults
 r20786@hlagh (orig r7732):  caelum | 2009-09-25 21:17:16 -0400
 some cleanups
 r20804@hlagh (orig r7736):  caelum | 2009-09-28 05:31:38 -0400
 minor changes
 r20805@hlagh (orig r7737):  caelum | 2009-09-28 06:25:48 -0400
 fix DT stuff
 r20809@hlagh (orig r7741):  caelum | 2009-09-28 22:25:55 -0400
 removed some dead code, added fix and test for _execute_array_empty
 r20811@hlagh (orig r7743):  caelum | 2009-09-29 13:36:20 -0400
 minor changes after review
 r20812@hlagh (orig r7744):  caelum | 2009-09-29 14:16:03 -0400
 do not clobber $rv from execute_array
 r20813@hlagh (orig r7745):  caelum | 2009-09-29 14:38:14 -0400
 make insert_bulk atomic
 r20815@hlagh (orig r7747):  caelum | 2009-09-29 20:35:26 -0400
 remove _exhaaust_statements
 r20816@hlagh (orig r7748):  caelum | 2009-09-29 21:48:38 -0400
 fix insert_bulk when not using bulk api inside a txn
 r20831@hlagh (orig r7749):  caelum | 2009-09-30 02:53:42 -0400
 added test for populate being atomic
 r20832@hlagh (orig r7750):  caelum | 2009-09-30 03:00:59 -0400
 factor out subclass-specific _execute_array callback
 r20833@hlagh (orig r7751):  caelum | 2009-10-01 11:59:30 -0400
 remove a piece of dead code
 r20840@hlagh (orig r7758):  caelum | 2009-10-03 15:46:56 -0400
 remove _pretty_print
 r20842@hlagh (orig r7760):  caelum | 2009-10-04 16:19:56 -0400
 minor optimization for insert_bulk
 r21050@hlagh (orig r7796):  caelum | 2009-10-18 04:56:54 -0400
 error checking related to literal SQL for insert_bulk
---

diff --git a/Changes b/Changes
index f39901e..c0a3163 100644
--- a/Changes
+++ b/Changes
@@ -1,5 +1,18 @@
 Revision history for DBIx::Class
 
+
+        - Complete Sybase RDBMS support including:
+          - Support for TEXT/IMAGE columns
+          - Support for the 'money' datatype
+          - Transaction savepoints support
+          - DateTime inflation support
+          - Support for bind variables when connecting to a newer Sybase with
+             OpenClient libraries
+          - Support for connections via FreeTDS with CASTs for bind variables
+             when needed
+          - Support for interpolated variables with proper quoting when
+             connecting to an older Sybase and/or via FreeTDS
+          - bulk API support for populate()
         - Add is_paged method to DBIx::Class::ResultSet so that we can
           check that if we want a pager
         - Skip versioning test on really old perls lacking Time::HiRes
diff --git a/Makefile.PL b/Makefile.PL
index e3885d2..3d1462b 100644
--- a/Makefile.PL
+++ b/Makefile.PL
@@ -45,6 +45,7 @@ requires 'Scope::Guard'             => '0.03';
 requires 'SQL::Abstract'            => '1.60';
 requires 'SQL::Abstract::Limit'     => '0.13';
 requires 'Sub::Name'                => '0.04';
+requires 'Data::Dumper::Concise'    => '1.000';
 
 my %replication_requires = (
   'Moose',                    => '0.87',
@@ -114,6 +115,12 @@ my %force_requires_if_author = (
       'DateTime::Format::Oracle' => '0',
     ) : ()
   ,
+
+  $ENV{DBICTEST_SYBASE_DSN}
+    ? (
+      'DateTime::Format::Sybase' => 0,
+    ) : ()
+  ,
 );
 #************************************************************************#
 # Make ABSOLUTELY SURE that nothing on the list above is a real require, #
@@ -135,7 +142,7 @@ resources 'license'     => 'http://dev.perl.org/licenses/';
 resources 'repository'  => 'http://dev.catalyst.perl.org/svnweb/bast/browse/DBIx-Class/';
 resources 'MailingList' => 'http://lists.scsys.co.uk/cgi-bin/mailman/listinfo/dbix-class';
 
-no_index 'DBIx::Class::Storage::DBI::Sybase::Base';
+no_index 'DBIx::Class::Storage::DBI::Sybase::Common';
 no_index 'DBIx::Class::SQLAHacks';
 no_index 'DBIx::Class::SQLAHacks::MSSQL';
 no_index 'DBIx::Class::Storage::DBI::AmbiguousGlob';
diff --git a/lib/DBIx/Class/ResultSet.pm b/lib/DBIx/Class/ResultSet.pm
index e0e1686..31bc5b4 100644
--- a/lib/DBIx/Class/ResultSet.pm
+++ b/lib/DBIx/Class/ResultSet.pm
@@ -1796,7 +1796,10 @@ sub populate {
   } else {
     my ($first, @rest) = @$data;
 
-    my @names = grep {!ref $first->{$_}} keys %$first;
+    my @names = grep {
+      (not ref $first->{$_}) || (ref $first->{$_} eq 'SCALAR')
+    } keys %$first;
+
     my @rels = grep { $self->result_source->has_relationship($_) } keys %$first;
     my @pks = $self->result_source->primary_columns;
 
diff --git a/lib/DBIx/Class/Storage/DBI.pm b/lib/DBIx/Class/Storage/DBI.pm
index fdff258..5a6d4d7 100644
--- a/lib/DBIx/Class/Storage/DBI.pm
+++ b/lib/DBIx/Class/Storage/DBI.pm
@@ -13,6 +13,7 @@ use DBIx::Class::Storage::DBI::Cursor;
 use DBIx::Class::Storage::Statistics;
 use Scalar::Util();
 use List::Util();
+use Data::Dumper::Concise();
 
 # what version of sqlt do we require if deploy() without a ddl_dir is invoked
 # when changing also adjust the corresponding author_require in Makefile.PL
@@ -1344,14 +1345,96 @@ sub insert_bulk {
   }
 
   my %colvalues;
-  my $table = $source->from;
   @colvalues{@$cols} = (0..$#$cols);
-  my ($sql, @bind) = $self->sql_maker->insert($table, \%colvalues);
+
+  for my $i (0..$#$cols) {
+    my $first_val = $data->[0][$i];
+    next unless ref $first_val eq 'SCALAR';
+
+    $colvalues{ $cols->[$i] } = $first_val;
+## This is probably unnecessary since $rs->populate only looks at the first
+## slice anyway.
+#      if (grep {
+#        ref $_ eq 'SCALAR' && $$_ eq $$first_val
+#      } map $data->[$_][$i], (1..$#$data)) == (@$data - 1);
+  }
+
+  # check for bad data
+  my $bad_slice = sub {
+    my ($msg, $slice_idx) = @_;
+    $self->throw_exception(sprintf "%s for populate slice:\n%s",
+      $msg,
+      Data::Dumper::Concise::Dumper({
+        map { $cols->[$_] => $data->[$slice_idx][$_] } (0 .. $#$cols)
+      }),
+    );
+  };
+
+  for my $datum_idx (0..$#$data) {
+    my $datum = $data->[$datum_idx];
+
+    for my $col_idx (0..$#$cols) {
+      my $val            = $datum->[$col_idx];
+      my $sqla_bind      = $colvalues{ $cols->[$col_idx] };
+      my $is_literal_sql = (ref $sqla_bind) eq 'SCALAR';
+
+      if ($is_literal_sql) {
+        if (not ref $val) {
+          $bad_slice->('bind found where literal SQL expected', $datum_idx);
+        }
+        elsif ((my $reftype = ref $val) ne 'SCALAR') {
+          $bad_slice->("$reftype reference found where literal SQL expected",
+            $datum_idx);
+        }
+        elsif ($$val ne $$sqla_bind){
+          $bad_slice->("inconsistent literal SQL value, expecting: '$$sqla_bind'",
+            $datum_idx);
+        }
+      }
+      elsif (my $reftype = ref $val) {
+        $bad_slice->("$reftype reference found where bind expected",
+          $datum_idx);
+      }
+    }
+  }
+
+  my ($sql, $bind) = $self->_prep_for_execute (
+    'insert', undef, $source, [\%colvalues]
+  );
+  my @bind = @$bind;
+
+  my $empty_bind = 1 if (not @bind) &&
+    (grep { ref $_ eq 'SCALAR' } values %colvalues) == @$cols;
+
+  if ((not @bind) && (not $empty_bind)) {
+    $self->throw_exception(
+      'Cannot insert_bulk without support for placeholders'
+    );
+  }
 
   $self->_query_start( $sql, @bind );
   my $sth = $self->sth($sql);
 
-#  @bind = map { ref $_ ? ''.$_ : $_ } @bind; # stringify args
+  my $rv = do {
+    if ($empty_bind) {
+      # bind_param_array doesn't work if there are no binds
+      $self->_dbh_execute_inserts_with_no_binds( $sth, scalar @$data );
+    }
+    else {
+#      @bind = map { ref $_ ? ''.$_ : $_ } @bind; # stringify args
+      $self->_execute_array( $source, $sth, \@bind, $cols, $data );
+    }
+  };
+
+  $self->_query_end( $sql, @bind );
+
+  return (wantarray ? ($rv, $sth, @bind) : $rv);
+}
+
+sub _execute_array {
+  my ($self, $source, $sth, $bind, $cols, $data, @extra) = @_;
+
+  my $guard = $self->txn_scope_guard unless $self->{transaction_depth} != 0;
 
   ## This must be an arrayref, else nothing works!
   my $tuple_status = [];
@@ -1362,7 +1445,7 @@ sub insert_bulk {
   ## Bind the values and execute
   my $placeholder_index = 1;
 
-  foreach my $bound (@bind) {
+  foreach my $bound (@$bind) {
 
     my $attributes = {};
     my ($column_name, $data_index) = @$bound;
@@ -1377,32 +1460,65 @@ sub insert_bulk {
     $sth->bind_param_array( $placeholder_index, [@data], $attributes );
     $placeholder_index++;
   }
-  my $rv = eval { $sth->execute_array({ArrayTupleStatus => $tuple_status}) };
-  if (my $err = $@) {
+
+  my $rv = eval {
+    $self->_dbh_execute_array($sth, $tuple_status, @extra);
+  };
+  my $err = $@ || $sth->errstr;
+
+# Statement must finish even if there was an exception.
+  eval { $sth->finish };
+  $err = $@ unless $err;
+
+  if ($err) {
     my $i = 0;
     ++$i while $i <= $#$tuple_status && !ref $tuple_status->[$i];
 
-    $self->throw_exception($sth->errstr || "Unexpected populate error: $err")
+    $self->throw_exception("Unexpected populate error: $err")
       if ($i > $#$tuple_status);
 
-    require Data::Dumper;
-    local $Data::Dumper::Terse = 1;
-    local $Data::Dumper::Indent = 1;
-    local $Data::Dumper::Useqq = 1;
-    local $Data::Dumper::Quotekeys = 0;
-    local $Data::Dumper::Sortkeys = 1;
-
     $self->throw_exception(sprintf "%s for populate slice:\n%s",
-      $tuple_status->[$i][1],
-      Data::Dumper::Dumper(
-        { map { $cols->[$_] => $data->[$i][$_] } (0 .. $#$cols) }
-      ),
+      ($tuple_status->[$i][1] || $err),
+      Data::Dumper::Concise::Dumper({
+        map { $cols->[$_] => $data->[$i][$_] } (0 .. $#$cols)
+      }),
     );
   }
-  $self->throw_exception($sth->errstr) if !$rv;
 
-  $self->_query_end( $sql, @bind );
-  return (wantarray ? ($rv, $sth, @bind) : $rv);
+  $guard->commit if $guard;
+
+  return $rv;
+}
+
+sub _dbh_execute_array {
+    my ($self, $sth, $tuple_status, @extra) = @_;
+
+    return $sth->execute_array({ArrayTupleStatus => $tuple_status});
+}
+
+sub _dbh_execute_inserts_with_no_binds {
+  my ($self, $sth, $count) = @_;
+
+  my $guard = $self->txn_scope_guard unless $self->{transaction_depth} != 0;
+
+  eval {
+    my $dbh = $self->_get_dbh;
+    local $dbh->{RaiseError} = 1;
+    local $dbh->{PrintError} = 0;
+
+    $sth->execute foreach 1..$count;
+  };
+  my $exception = $@;
+
+# Make sure statement is finished even if there was an exception.
+  eval { $sth->finish };
+  $exception = $@ unless $exception;
+
+  $self->throw_exception($exception) if $exception;
+
+  $guard->commit if $guard;
+
+  return $count;
 }
 
 sub update {
@@ -1993,7 +2109,6 @@ sub _subq_count_select {
   return @pcols ? \@pcols : [ 1 ];
 }
 
-
 sub source_bind_attributes {
   my ($self, $source) = @_;
 
diff --git a/lib/DBIx/Class/Storage/DBI/AutoCast.pm b/lib/DBIx/Class/Storage/DBI/AutoCast.pm
index c3b154b..c887a86 100644
--- a/lib/DBIx/Class/Storage/DBI/AutoCast.pm
+++ b/lib/DBIx/Class/Storage/DBI/AutoCast.pm
@@ -29,6 +29,10 @@ converted to:
 
   CAST(? as $mapped_type)
 
+This option can also be enabled in L<DBIx::Class::Storage::DBI/connect_info> as:
+
+  on_connect_call => ['set_auto_cast']
+
 =cut
 
 sub _prep_for_execute {
@@ -60,6 +64,26 @@ sub _prep_for_execute {
   return ($sql, $bind);
 }
 
+=head2 connect_call_set_auto_cast
+
+Executes:
+
+  $schema->storage->auto_cast(1);
+
+on connection.
+
+Used as:
+
+    on_connect_call => ['set_auto_cast']
+
+in L<DBIx::Class::Storage::DBI/connect_info>.
+
+=cut
+
+sub connect_call_set_auto_cast {
+  my $self = shift;
+  $self->auto_cast(1);
+}
 
 =head1 AUTHOR
 
diff --git a/lib/DBIx/Class/Storage/DBI/ODBC/Microsoft_SQL_Server.pm b/lib/DBIx/Class/Storage/DBI/ODBC/Microsoft_SQL_Server.pm
index bf01131..d0a0133 100644
--- a/lib/DBIx/Class/Storage/DBI/ODBC/Microsoft_SQL_Server.pm
+++ b/lib/DBIx/Class/Storage/DBI/ODBC/Microsoft_SQL_Server.pm
@@ -61,7 +61,7 @@ sub connect_call_use_dynamic_cursors {
   my $self = shift;
 
   if (ref($self->_dbi_connect_info->[0]) eq 'CODE') {
-    $self->throw_exception ('cannot set DBI attributes on a CODE ref connect_info');
+    $self->throw_exception ('Cannot set DBI attributes on a CODE ref connect_info');
   }
 
   my $dbi_attrs = $self->_dbi_connect_info->[-1];
diff --git a/lib/DBIx/Class/Storage/DBI/Sybase.pm b/lib/DBIx/Class/Storage/DBI/Sybase.pm
index 41b0c81..eeb4f01 100644
--- a/lib/DBIx/Class/Storage/DBI/Sybase.pm
+++ b/lib/DBIx/Class/Storage/DBI/Sybase.pm
@@ -4,63 +4,1134 @@ use strict;
 use warnings;
 
 use base qw/
-    DBIx::Class::Storage::DBI::Sybase::Base
-    DBIx::Class::Storage::DBI::NoBindVars
+    DBIx::Class::Storage::DBI::Sybase::Common
+    DBIx::Class::Storage::DBI::AutoCast
 /;
 use mro 'c3';
+use Carp::Clan qw/^DBIx::Class/;
+use List::Util();
+use Sub::Name();
+use Data::Dumper::Concise();
+
+__PACKAGE__->mk_group_accessors('simple' =>
+    qw/_identity _blob_log_on_update _writer_storage _is_extra_storage
+       _bulk_storage _is_bulk_storage _began_bulk_work
+       _bulk_disabled_due_to_coderef_connect_info_warned
+       _identity_method/
+);
+
+my @also_proxy_to_extra_storages = qw/
+  connect_call_set_auto_cast auto_cast connect_call_blob_setup
+  connect_call_datetime_setup
+
+  disconnect _connect_info _sql_maker _sql_maker_opts disable_sth_caching
+  auto_savepoint unsafe cursor_class debug debugobj schema
+/;
+
+=head1 NAME
+
+DBIx::Class::Storage::DBI::Sybase - Sybase support for DBIx::Class
+
+=head1 SYNOPSIS
+
+This subclass supports L<DBD::Sybase> for real Sybase databases.  If you are
+using an MSSQL database via L<DBD::Sybase>, your storage will be reblessed to
+L<DBIx::Class::Storage::DBI::Sybase::Microsoft_SQL_Server>.
+
+=head1 DESCRIPTION
+
+If your version of Sybase does not support placeholders, then your storage
+will be reblessed to L<DBIx::Class::Storage::DBI::Sybase::NoBindVars>. You can
+also enable that driver explicitly, see the documentation for more details.
+
+With this driver there is unfortunately no way to get the C<last_insert_id>
+without doing a C<SELECT MAX(col)>. This is done safely in a transaction
+(locking the table.) See L</INSERTS WITH PLACEHOLDERS>.
+
+A recommended L<DBIx::Class::Storage::DBI/connect_info> setting:
+
+  on_connect_call => [['datetime_setup'], ['blob_setup', log_on_update => 0]]
+
+=head1 METHODS
+
+=cut
 
 sub _rebless {
-    my $self = shift;
+  my $self = shift;
 
+  if (ref($self) eq 'DBIx::Class::Storage::DBI::Sybase') {
     my $dbtype = eval {
-      @{$self->_get_dbh
-        ->selectrow_arrayref(qq{sp_server_info \@attribute_id=1})
-      }[2]
-    };
-    unless ( $@ ) {
-        $dbtype =~ s/\W/_/gi;
-        my $subclass = "DBIx::Class::Storage::DBI::Sybase::${dbtype}";
-        if ($self->load_optional_class($subclass) && !$self->isa($subclass)) {
-            bless $self, $subclass;
+      @{$self->_get_dbh->selectrow_arrayref(qq{sp_server_info \@attribute_id=1})}[2]
+    } || '';
+
+    my $exception = $@;
+    $dbtype =~ s/\W/_/gi;
+    my $subclass = "DBIx::Class::Storage::DBI::Sybase::${dbtype}";
+
+    if (!$exception && $dbtype && $self->load_optional_class($subclass)) {
+      bless $self, $subclass;
+      $self->_rebless;
+    } else { # real Sybase
+      my $no_bind_vars = 'DBIx::Class::Storage::DBI::Sybase::NoBindVars';
+
+      if ($self->using_freetds) {
+        carp <<'EOF' unless $ENV{DBIC_SYBASE_FREETDS_NOWARN};
+
+You are using FreeTDS with Sybase.
+
+We will do our best to support this configuration, but please consider this
+support experimental.
+
+TEXT/IMAGE columns will definitely not work.
+
+You are encouraged to recompile DBD::Sybase with the Sybase Open Client libraries
+instead.
+
+See perldoc DBIx::Class::Storage::DBI::Sybase for more details.
+
+To turn off this warning set the DBIC_SYBASE_FREETDS_NOWARN environment
+variable.
+EOF
+        if (not $self->_typeless_placeholders_supported) {
+          if ($self->_placeholders_supported) {
+            $self->auto_cast(1);
+          } else {
+            $self->ensure_class_loaded($no_bind_vars);
+            bless $self, $no_bind_vars;
             $self->_rebless;
+          }
         }
+      }
+      elsif (not $self->_get_dbh->{syb_dynamic_supported}) {
+        # not necessarily FreeTDS, but no placeholders nevertheless
+        $self->ensure_class_loaded($no_bind_vars);
+        bless $self, $no_bind_vars;
+        $self->_rebless;
+      } elsif (not $self->_typeless_placeholders_supported) {
+        # this is highly unlikely, but we check just in case
+        $self->auto_cast(1);
+      }
     }
+  }
 }
 
-sub _dbh_last_insert_id {
-    my ($self, $dbh, $source, $col) = @_;
-    return ($dbh->selectrow_array('select @@identity'))[0];
+sub _init {
+  my $self = shift;
+  $self->_set_max_connect(256);
+
+  # based on LongReadLen in connect_info
+  $self->set_textsize if $self->using_freetds;
+
+# create storage for insert/(update blob) transactions,
+# unless this is that storage
+  return if $self->_is_extra_storage;
+
+  my $writer_storage = (ref $self)->new;
+
+  $writer_storage->_is_extra_storage(1);
+  $writer_storage->connect_info($self->connect_info);
+  $writer_storage->auto_cast($self->auto_cast);
+
+  $self->_writer_storage($writer_storage);
+
+# create a bulk storage unless connect_info is a coderef
+  return
+    if (Scalar::Util::reftype($self->_dbi_connect_info->[0])||'') eq 'CODE';
+
+  my $bulk_storage = (ref $self)->new;
+
+  $bulk_storage->_is_extra_storage(1);
+  $bulk_storage->_is_bulk_storage(1); # for special ->disconnect acrobatics
+  $bulk_storage->connect_info($self->connect_info);
+
+# this is why
+  $bulk_storage->_dbi_connect_info->[0] .= ';bulkLogin=1';
+
+  $self->_bulk_storage($bulk_storage);
+}
+
+for my $method (@also_proxy_to_extra_storages) {
+  no strict 'refs';
+  no warnings 'redefine';
+
+  my $replaced = __PACKAGE__->can($method);
+
+  *{$method} = Sub::Name::subname $method => sub {
+    my $self = shift;
+    $self->_writer_storage->$replaced(@_) if $self->_writer_storage;
+    $self->_bulk_storage->$replaced(@_)   if $self->_bulk_storage;
+    return $self->$replaced(@_);
+  };
+}
+
+sub disconnect {
+  my $self = shift;
+
+# Even though we call $sth->finish for uses off the bulk API, there's still an
+# "active statement" warning on disconnect, which we throw away here.
+# This is due to the bug described in insert_bulk.
+# Currently a noop because 'prepare' is used instead of 'prepare_cached'.
+  local $SIG{__WARN__} = sub {
+    warn $_[0] unless $_[0] =~ /active statement/i;
+  } if $self->_is_bulk_storage;
+
+# so that next transaction gets a dbh
+  $self->_began_bulk_work(0) if $self->_is_bulk_storage;
+
+  $self->next::method;
+}
+
+# Make sure we have CHAINED mode turned on if AutoCommit is off in non-FreeTDS
+# DBD::Sybase (since we don't know how DBD::Sybase was compiled.) If however
+# we're using FreeTDS, CHAINED mode turns on an implicit transaction which we
+# only want when AutoCommit is off.
+sub _populate_dbh {
+  my $self = shift;
+
+  $self->next::method(@_);
+  
+  if ($self->_is_bulk_storage) {
+# this should be cleared on every reconnect
+    $self->_began_bulk_work(0);
+    return;
+  }
+
+  if (not $self->using_freetds) {
+    $self->_dbh->{syb_chained_txn} = 1;
+  } else {
+    if ($self->_dbh_autocommit) {
+      $self->_dbh->do('SET CHAINED OFF');
+    } else {
+      $self->_dbh->do('SET CHAINED ON');
+    }
+  }
+}
+
+=head2 connect_call_blob_setup
+
+Used as:
+
+  on_connect_call => [ [ 'blob_setup', log_on_update => 0 ] ]
+
+Does C<< $dbh->{syb_binary_images} = 1; >> to return C<IMAGE> data as raw binary
+instead of as a hex string.
+
+Recommended.
+
+Also sets the C<log_on_update> value for blob write operations. The default is
+C<1>, but C<0> is better if your database is configured for it.
+
+See
+L<DBD::Sybase/Handling_IMAGE/TEXT_data_with_syb_ct_get_data()/syb_ct_send_data()>.
+
+=cut
+
+sub connect_call_blob_setup {
+  my $self = shift;
+  my %args = @_;
+  my $dbh = $self->_dbh;
+  $dbh->{syb_binary_images} = 1;
+
+  $self->_blob_log_on_update($args{log_on_update})
+    if exists $args{log_on_update};
+}
+
+sub _is_lob_type {
+  my $self = shift;
+  my $type = shift;
+  $type && $type =~ /(?:text|image|lob|bytea|binary|memo)/i;
+}
+
+sub _is_lob_column {
+  my ($self, $source, $column) = @_;
+
+  return $self->_is_lob_type($source->column_info($column)->{data_type});
+}
+
+sub _prep_for_execute {
+  my $self = shift;
+  my ($op, $extra_bind, $ident, $args) = @_;
+
+  my ($sql, $bind) = $self->next::method (@_);
+
+  my $table = Scalar::Util::blessed($ident) ? $ident->from : $ident;
+
+  my $bind_info = $self->_resolve_column_info(
+    $ident, [map $_->[0], @{$bind}]
+  );
+  my $bound_identity_col = List::Util::first
+    { $bind_info->{$_}{is_auto_increment} }
+    (keys %$bind_info)
+  ;
+  my $identity_col = Scalar::Util::blessed($ident) &&
+    List::Util::first
+    { $ident->column_info($_)->{is_auto_increment} }
+    $ident->columns
+  ;
+
+  if (($op eq 'insert' && $bound_identity_col) ||
+      ($op eq 'update' && exists $args->[0]{$identity_col})) {
+    $sql = join ("\n",
+      $self->_set_table_identity_sql($op => $table, 'on'),
+      $sql,
+      $self->_set_table_identity_sql($op => $table, 'off'),
+    );
+  }
+
+  if ($op eq 'insert' && (not $bound_identity_col) && $identity_col &&
+      (not $self->{insert_bulk})) {
+    $sql =
+      "$sql\n" .
+      $self->_fetch_identity_sql($ident, $identity_col);
+  }
+
+  return ($sql, $bind);
+}
+
+sub _set_table_identity_sql {
+  my ($self, $op, $table, $on_off) = @_;
+
+  return sprintf 'SET IDENTITY_%s %s %s',
+    uc($op), $self->sql_maker->_quote($table), uc($on_off);
+}
+
+# Stolen from SQLT, with some modifications. This is a makeshift
+# solution before a sane type-mapping library is available, thus
+# the 'our' for easy overrides.
+our %TYPE_MAPPING  = (
+    number    => 'numeric',
+    money     => 'money',
+    varchar   => 'varchar',
+    varchar2  => 'varchar',
+    timestamp => 'datetime',
+    text      => 'varchar',
+    real      => 'double precision',
+    comment   => 'text',
+    bit       => 'bit',
+    tinyint   => 'smallint',
+    float     => 'double precision',
+    serial    => 'numeric',
+    bigserial => 'numeric',
+    boolean   => 'varchar',
+    long      => 'varchar',
+);
+
+sub _native_data_type {
+  my ($self, $type) = @_;
+
+  $type = lc $type;
+  $type =~ s/\s* identity//x;
+
+  return uc($TYPE_MAPPING{$type} || $type);
+}
+
+sub _fetch_identity_sql {
+  my ($self, $source, $col) = @_;
+
+  return sprintf ("SELECT MAX(%s) FROM %s",
+    map { $self->sql_maker->_quote ($_) } ($col, $source->from)
+  );
+}
+
+sub _execute {
+  my $self = shift;
+  my ($op) = @_;
+
+  my ($rv, $sth, @bind) = $self->dbh_do($self->can('_dbh_execute'), @_);
+
+  if ($op eq 'insert') {
+    $self->_identity($sth->fetchrow_array);
+    $sth->finish;
+  }
+
+  return wantarray ? ($rv, $sth, @bind) : $rv;
+}
+
+sub last_insert_id { shift->_identity }
+
+# handles TEXT/IMAGE and transaction for last_insert_id
+sub insert {
+  my $self = shift;
+  my ($source, $to_insert) = @_;
+
+  my $identity_col = (List::Util::first
+    { $source->column_info($_)->{is_auto_increment} }
+    $source->columns) || '';
+
+  # check for empty insert
+  # INSERT INTO foo DEFAULT VALUES -- does not work with Sybase
+  # try to insert explicit 'DEFAULT's instead (except for identity)
+  if (not %$to_insert) {
+    for my $col ($source->columns) {
+      next if $col eq $identity_col;
+      $to_insert->{$col} = \'DEFAULT';
+    }
+  }
+
+  my $blob_cols = $self->_remove_blob_cols($source, $to_insert);
+
+  # do we need the horrific SELECT MAX(COL) hack?
+  my $dumb_last_insert_id =
+       $identity_col
+    && (not exists $to_insert->{$identity_col})
+    && ($self->_identity_method||'') ne '@@IDENTITY';
+
+  my $next = $self->next::can;
+
+  # we are already in a transaction, or there are no blobs
+  # and we don't need the PK - just (try to) do it
+  if ($self->{transaction_depth}
+        || (!$blob_cols && !$dumb_last_insert_id) 
+  ) {
+    return $self->_insert (
+      $next, $source, $to_insert, $blob_cols, $identity_col
+    );
+  }
+
+  # otherwise use the _writer_storage to do the insert+transaction on another
+  # connection
+  my $guard = $self->_writer_storage->txn_scope_guard;
+
+  my $updated_cols = $self->_writer_storage->_insert (
+    $next, $source, $to_insert, $blob_cols, $identity_col
+  );
+
+  $self->_identity($self->_writer_storage->_identity);
+
+  $guard->commit;
+
+  return $updated_cols;
+}
+
+sub _insert {
+  my ($self, $next, $source, $to_insert, $blob_cols, $identity_col) = @_;
+
+  my $updated_cols = $self->$next ($source, $to_insert);
+
+  my $final_row = {
+    ($identity_col ?
+      ($identity_col => $self->last_insert_id($source, $identity_col)) : ()),
+    %$to_insert,
+    %$updated_cols,
+  };
+
+  $self->_insert_blobs ($source, $blob_cols, $final_row) if $blob_cols;
+
+  return $updated_cols;
+}
+
+sub update {
+  my $self = shift;
+  my ($source, $fields, $where, @rest) = @_;
+
+  my $wantarray = wantarray;
+
+  my $blob_cols = $self->_remove_blob_cols($source, $fields);
+
+  my $table = $source->name;
+
+  my $identity_col = List::Util::first
+    { $source->column_info($_)->{is_auto_increment} }
+    $source->columns;
+
+  my $is_identity_update = $identity_col && defined $fields->{$identity_col};
+
+  return $self->next::method(@_) unless $blob_cols;
+
+# If there are any blobs in $where, Sybase will return a descriptive error
+# message.
+# XXX blobs can still be used with a LIKE query, and this should be handled.
+
+# update+blob update(s) done atomically on separate connection
+  $self = $self->_writer_storage;
+
+  my $guard = $self->txn_scope_guard;
+
+# First update the blob columns to be updated to '' (taken from $fields, where
+# it is originally put by _remove_blob_cols .)
+  my %blobs_to_empty = map { ($_ => delete $fields->{$_}) } keys %$blob_cols;
+
+# We can't only update NULL blobs, because blobs cannot be in the WHERE clause.
+
+  $self->next::method($source, \%blobs_to_empty, $where, @rest);
+
+# Now update the blobs before the other columns in case the update of other
+# columns makes the search condition invalid.
+  $self->_update_blobs($source, $blob_cols, $where);
+
+  my @res;
+  if (%$fields) {
+    if ($wantarray) {
+      @res    = $self->next::method(@_);
+    }
+    elsif (defined $wantarray) {
+      $res[0] = $self->next::method(@_);
+    }
+    else {
+      $self->next::method(@_);
+    }
+  }
+
+  $guard->commit;
+
+  return $wantarray ? @res : $res[0];
+}
+
+sub insert_bulk {
+  my $self = shift;
+  my ($source, $cols, $data) = @_;
+
+  my $identity_col = List::Util::first
+    { $source->column_info($_)->{is_auto_increment} }
+    $source->columns;
+
+  my $is_identity_insert = (List::Util::first
+    { $_ eq $identity_col }
+    @{$cols}
+  ) ? 1 : 0;
+
+  my @source_columns = $source->columns;
+
+  my $use_bulk_api =
+    $self->_bulk_storage &&
+    $self->_get_dbh->{syb_has_blk};
+
+  if ((not $use_bulk_api) &&
+      (Scalar::Util::reftype($self->_dbi_connect_info->[0])||'') eq 'CODE' &&
+      (not $self->_bulk_disabled_due_to_coderef_connect_info_warned)) {
+    carp <<'EOF';
+Bulk API support disabled due to use of a CODEREF connect_info. Reverting to
+regular array inserts.
+EOF
+    $self->_bulk_disabled_due_to_coderef_connect_info_warned(1);
+  }
+
+  if (not $use_bulk_api) {
+    my $blob_cols = $self->_remove_blob_cols_array($source, $cols, $data);
+
+# _execute_array uses a txn anyway, but it ends too early in case we need to
+# select max(col) to get the identity for inserting blobs.
+    ($self, my $guard) = $self->{transaction_depth} == 0 ? 
+      ($self->_writer_storage, $self->_writer_storage->txn_scope_guard)
+      :
+      ($self, undef);
+
+    local $self->{insert_bulk} = 1;
+
+    $self->next::method(@_);
+
+    if ($blob_cols) {
+      if ($is_identity_insert) {
+        $self->_insert_blobs_array ($source, $blob_cols, $cols, $data);
+      }
+      else {
+        my @cols_with_identities = (@$cols, $identity_col);
+
+        ## calculate identities
+        # XXX This assumes identities always increase by 1, which may or may not
+        # be true.
+        my ($last_identity) =
+          $self->_dbh->selectrow_array (
+            $self->_fetch_identity_sql($source, $identity_col)
+          );
+        my @identities = (($last_identity - @$data + 1) .. $last_identity);
+
+        my @data_with_identities = map [@$_, shift @identities], @$data;
+
+        $self->_insert_blobs_array (
+          $source, $blob_cols, \@cols_with_identities, \@data_with_identities
+        );
+      }
+    }
+
+    $guard->commit if $guard;
+
+    return;
+  }
+
+# otherwise, use the bulk API
+
+# rearrange @$data so that columns are in database order
+  my %orig_idx;
+  @orig_idx{@$cols} = 0..$#$cols;
+
+  my %new_idx;
+  @new_idx{@source_columns} = 0..$#source_columns;
+
+  my @new_data;
+  for my $datum (@$data) {
+    my $new_datum = [];
+    for my $col (@source_columns) {
+# identity data will be 'undef' if not $is_identity_insert
+# columns with defaults will also be 'undef'
+      $new_datum->[ $new_idx{$col} ] =
+        exists $orig_idx{$col} ? $datum->[ $orig_idx{$col} ] : undef;
+    }
+    push @new_data, $new_datum;
+  }
+
+# bcp identity index is 1-based
+  my $identity_idx = exists $new_idx{$identity_col} ?
+    $new_idx{$identity_col} + 1 : 0;
+
+## Set a client-side conversion error handler, straight from DBD::Sybase docs.
+# This ignores any data conversion errors detected by the client side libs, as
+# they are usually harmless.
+  my $orig_cslib_cb = DBD::Sybase::set_cslib_cb(
+    Sub::Name::subname insert_bulk => sub {
+      my ($layer, $origin, $severity, $errno, $errmsg, $osmsg, $blkmsg) = @_;
+
+      return 1 if $errno == 36;
+
+      carp
+        "Layer: $layer, Origin: $origin, Severity: $severity, Error: $errno" .
+        ($errmsg ? "\n$errmsg" : '') .
+        ($osmsg  ? "\n$osmsg"  : '')  .
+        ($blkmsg ? "\n$blkmsg" : '');
+
+      return 0;
+  });
+
+  eval {
+    my $bulk = $self->_bulk_storage;
+
+    my $guard = $bulk->txn_scope_guard;
+
+## XXX get this to work instead of our own $sth
+## will require SQLA or *Hacks changes for ordered columns
+#    $bulk->next::method($source, \@source_columns, \@new_data, {
+#      syb_bcp_attribs => {
+#        identity_flag   => $is_identity_insert,
+#        identity_column => $identity_idx,
+#      }
+#    });
+    my $sql = 'INSERT INTO ' .
+      $bulk->sql_maker->_quote($source->name) . ' (' .
+# colname list is ignored for BCP, but does no harm
+      (join ', ', map $bulk->sql_maker->_quote($_), @source_columns) . ') '.
+      ' VALUES ('.  (join ', ', ('?') x @source_columns) . ')';
+
+## XXX there's a bug in the DBD::Sybase bulk support that makes $sth->finish for
+## a prepare_cached statement ineffective. Replace with ->sth when fixed, or
+## better yet the version above. Should be fixed in DBD::Sybase .
+    my $sth = $bulk->_get_dbh->prepare($sql,
+#      'insert', # op
+      {
+        syb_bcp_attribs => {
+          identity_flag   => $is_identity_insert,
+          identity_column => $identity_idx,
+        }
+      }
+    );
+
+    my @bind = do {
+      my $idx = 0;
+      map [ $_, $idx++ ], @source_columns;
+    };
+
+    $self->_execute_array(
+      $source, $sth, \@bind, \@source_columns, \@new_data, sub {
+        $guard->commit
+      }
+    );
+
+    $bulk->_query_end($sql);
+  };
+
+  my $exception = $@;
+  DBD::Sybase::set_cslib_cb($orig_cslib_cb);
+
+  if ($exception =~ /-Y option/) {
+    carp <<"EOF";
+
+Sybase bulk API operation failed due to character set incompatibility, reverting
+to regular array inserts:
+
+*** Try unsetting the LANG environment variable.
+
+$exception
+EOF
+    $self->_bulk_storage(undef);
+    unshift @_, $self;
+    goto \&insert_bulk;
+  }
+  elsif ($exception) {
+# rollback makes the bulkLogin connection unusable
+    $self->_bulk_storage->disconnect;
+    $self->throw_exception($exception);
+  }
+}
+
+sub _dbh_execute_array {
+  my ($self, $sth, $tuple_status, $cb) = @_;
+
+  my $rv = $self->next::method($sth, $tuple_status);
+  $cb->() if $cb;
+
+  return $rv;
+}
+
+# Make sure blobs are not bound as placeholders, and return any non-empty ones
+# as a hash.
+sub _remove_blob_cols {
+  my ($self, $source, $fields) = @_;
+
+  my %blob_cols;
+
+  for my $col (keys %$fields) {
+    if ($self->_is_lob_column($source, $col)) {
+      my $blob_val = delete $fields->{$col};
+      if (not defined $blob_val) {
+        $fields->{$col} = \'NULL';
+      }
+      else {
+        $fields->{$col} = \"''";
+        $blob_cols{$col} = $blob_val unless $blob_val eq '';
+      }
+    }
+  }
+
+  return %blob_cols ? \%blob_cols : undef;
+}
+
+# same for insert_bulk
+sub _remove_blob_cols_array {
+  my ($self, $source, $cols, $data) = @_;
+
+  my @blob_cols;
+
+  for my $i (0..$#$cols) {
+    my $col = $cols->[$i];
+
+    if ($self->_is_lob_column($source, $col)) {
+      for my $j (0..$#$data) {
+        my $blob_val = delete $data->[$j][$i];
+        if (not defined $blob_val) {
+          $data->[$j][$i] = \'NULL';
+        }
+        else {
+          $data->[$j][$i] = \"''";
+          $blob_cols[$j][$i] = $blob_val
+            unless $blob_val eq '';
+        }
+      }
+    }
+  }
+
+  return @blob_cols ? \@blob_cols : undef;
+}
+
+sub _update_blobs {
+  my ($self, $source, $blob_cols, $where) = @_;
+
+  my (@primary_cols) = $source->primary_columns;
+
+  $self->throw_exception('Cannot update TEXT/IMAGE column(s) without a primary key')
+    unless @primary_cols;
+
+# check if we're updating a single row by PK
+  my $pk_cols_in_where = 0;
+  for my $col (@primary_cols) {
+    $pk_cols_in_where++ if defined $where->{$col};
+  }
+  my @rows;
+
+  if ($pk_cols_in_where == @primary_cols) {
+    my %row_to_update;
+    @row_to_update{@primary_cols} = @{$where}{@primary_cols};
+    @rows = \%row_to_update;
+  } else {
+    my $cursor = $self->select ($source, \@primary_cols, $where, {});
+    @rows = map {
+      my %row; @row{@primary_cols} = @$_; \%row
+    } $cursor->all;
+  }
+
+  for my $row (@rows) {
+    $self->_insert_blobs($source, $blob_cols, $row);
+  }
+}
+
+sub _insert_blobs {
+  my ($self, $source, $blob_cols, $row) = @_;
+  my $dbh = $self->_get_dbh;
+
+  my $table = $source->name;
+
+  my %row = %$row;
+  my (@primary_cols) = $source->primary_columns;
+
+  $self->throw_exception('Cannot update TEXT/IMAGE column(s) without a primary key')
+    unless @primary_cols;
+
+  $self->throw_exception('Cannot update TEXT/IMAGE column(s) without primary key values')
+    if ((grep { defined $row{$_} } @primary_cols) != @primary_cols);
+
+  for my $col (keys %$blob_cols) {
+    my $blob = $blob_cols->{$col};
+
+    my %where = map { ($_, $row{$_}) } @primary_cols;
+
+    my $cursor = $self->select ($source, [$col], \%where, {});
+    $cursor->next;
+    my $sth = $cursor->sth;
+
+    if (not $sth) {
+
+      $self->throw_exception(
+          "Could not find row in table '$table' for blob update:\n"
+        . Data::Dumper::Concise::Dumper (\%where)
+      );
+    }
+
+    eval {
+      do {
+        $sth->func('CS_GET', 1, 'ct_data_info') or die $sth->errstr;
+      } while $sth->fetch;
+
+      $sth->func('ct_prepare_send') or die $sth->errstr;
+
+      my $log_on_update = $self->_blob_log_on_update;
+      $log_on_update    = 1 if not defined $log_on_update;
+
+      $sth->func('CS_SET', 1, {
+        total_txtlen => length($blob),
+        log_on_update => $log_on_update
+      }, 'ct_data_info') or die $sth->errstr;
+
+      $sth->func($blob, length($blob), 'ct_send_data') or die $sth->errstr;
+
+      $sth->func('ct_finish_send') or die $sth->errstr;
+    };
+    my $exception = $@;
+    $sth->finish if $sth;
+    if ($exception) {
+      if ($self->using_freetds) {
+        $self->throw_exception (
+          'TEXT/IMAGE operation failed, probably because you are using FreeTDS: '
+          . $exception
+        );
+      } else {
+        $self->throw_exception($exception);
+      }
+    }
+  }
+}
+
+sub _insert_blobs_array {
+  my ($self, $source, $blob_cols, $cols, $data) = @_;
+
+  for my $i (0..$#$data) {
+    my $datum = $data->[$i];
+
+    my %row;
+    @row{ @$cols } = @$datum;
+
+    my %blob_vals;
+    for my $j (0..$#$cols) {
+      if (exists $blob_cols->[$i][$j]) {
+        $blob_vals{ $cols->[$j] } = $blob_cols->[$i][$j];
+      }
+    }
+
+    $self->_insert_blobs ($source, \%blob_vals, \%row);
+  }
+}
+
+=head2 connect_call_datetime_setup
+
+Used as:
+
+  on_connect_call => 'datetime_setup'
+
+In L<DBIx::Class::Storage::DBI/connect_info> to set:
+
+  $dbh->syb_date_fmt('ISO_strict'); # output fmt: 2004-08-21T14:36:48.080Z
+  $dbh->do('set dateformat mdy');   # input fmt:  08/13/1979 18:08:55.080
+
+On connection for use with L<DBIx::Class::InflateColumn::DateTime>, using
+L<DateTime::Format::Sybase>, which you will need to install.
+
+This works for both C<DATETIME> and C<SMALLDATETIME> columns, although
+C<SMALLDATETIME> columns only have minute precision.
+
+=cut
+
+{
+  my $old_dbd_warned = 0;
+
+  sub connect_call_datetime_setup {
+    my $self = shift;
+    my $dbh = $self->_get_dbh;
+
+    if ($dbh->can('syb_date_fmt')) {
+      # amazingly, this works with FreeTDS
+      $dbh->syb_date_fmt('ISO_strict');
+    } elsif (not $old_dbd_warned) {
+      carp "Your DBD::Sybase is too old to support ".
+      "DBIx::Class::InflateColumn::DateTime, please upgrade!";
+      $old_dbd_warned = 1;
+    }
+
+    $dbh->do('SET DATEFORMAT mdy');
+
+    1;
+  }
+}
+
+sub datetime_parser_type { "DateTime::Format::Sybase" }
+
+# ->begin_work and such have no effect with FreeTDS but we run them anyway to
+# let the DBD keep any state it needs to.
+#
+# If they ever do start working, the extra statements will do no harm (because
+# Sybase supports nested transactions.)
+
+sub _dbh_begin_work {
+  my $self = shift;
+
+# bulkLogin=1 connections are always in a transaction, and can only call BEGIN
+# TRAN once. However, we need to make sure there's a $dbh.
+  return if $self->_is_bulk_storage && $self->_dbh && $self->_began_bulk_work;
+
+  $self->next::method(@_);
+
+  if ($self->using_freetds) {
+    $self->_get_dbh->do('BEGIN TRAN');
+  }
+
+  $self->_began_bulk_work(1) if $self->_is_bulk_storage;
+}
+
+sub _dbh_commit {
+  my $self = shift;
+  if ($self->using_freetds) {
+    $self->_dbh->do('COMMIT');
+  }
+  return $self->next::method(@_);
+}
+
+sub _dbh_rollback {
+  my $self = shift;
+  if ($self->using_freetds) {
+    $self->_dbh->do('ROLLBACK');
+  }
+  return $self->next::method(@_);
+}
+
+# savepoint support using ASE syntax
+
+sub _svp_begin {
+  my ($self, $name) = @_;
+
+  $self->_get_dbh->do("SAVE TRANSACTION $name");
+}
+
+# A new SAVE TRANSACTION with the same name releases the previous one.
+sub _svp_release { 1 }
+
+sub _svp_rollback {
+  my ($self, $name) = @_;
+
+  $self->_get_dbh->do("ROLLBACK TRANSACTION $name");
 }
 
 1;
 
-=head1 NAME
+=head1 Schema::Loader Support
 
-DBIx::Class::Storage::DBI::Sybase - Storage::DBI subclass for Sybase
+There is an experimental branch of L<DBIx::Class::Schema::Loader> that will
+allow you to dump a schema from most (if not all) versions of Sybase.
 
-=head1 SYNOPSIS
+It is available via subversion from:
+
+  http://dev.catalyst.perl.org/repos/bast/branches/DBIx-Class-Schema-Loader/current/
+
+=head1 FreeTDS
+
+This driver supports L<DBD::Sybase> compiled against FreeTDS
+(L<http://www.freetds.org/>) to the best of our ability, however it is
+recommended that you recompile L<DBD::Sybase> against the Sybase Open Client
+libraries. They are a part of the Sybase ASE distribution:
+
+The Open Client FAQ is here:
+L<http://www.isug.com/Sybase_FAQ/ASE/section7.html>.
+
+Sybase ASE for Linux (which comes with the Open Client libraries) may be
+downloaded here: L<http://response.sybase.com/forms/ASE_Linux_Download>.
+
+To see if you're using FreeTDS check C<< $schema->storage->using_freetds >>, or run:
+
+  perl -MDBI -le 'my $dbh = DBI->connect($dsn, $user, $pass); print $dbh->{syb_oc_version}'
+
+Some versions of the libraries involved will not support placeholders, in which
+case the storage will be reblessed to
+L<DBIx::Class::Storage::DBI::Sybase::NoBindVars>.
+
+In some configurations, placeholders will work but will throw implicit type
+conversion errors for anything that's not expecting a string. In such a case,
+the C<auto_cast> option from L<DBIx::Class::Storage::DBI::AutoCast> is
+automatically set, which you may enable on connection with
+L<DBIx::Class::Storage::DBI::AutoCast/connect_call_set_auto_cast>. The type info
+for the C<CAST>s is taken from the L<DBIx::Class::ResultSource/data_type>
+definitions in your Result classes, and are mapped to a Sybase type (if it isn't
+already) using a mapping based on L<SQL::Translator>.
+
+In other configurations, placeholers will work just as they do with the Sybase
+Open Client libraries.
+
+Inserts or updates of TEXT/IMAGE columns will B<NOT> work with FreeTDS.
+
+=head1 INSERTS WITH PLACEHOLDERS
+
+With placeholders enabled, inserts are done in a transaction so that there are
+no concurrency issues with getting the inserted identity value using
+C<SELECT MAX(col)>, which is the only way to get the C<IDENTITY> value in this
+mode.
+
+In addition, they are done on a separate connection so that it's possible to
+have active cursors when doing an insert.
+
+When using C<DBIx::Class::Storage::DBI::Sybase::NoBindVars> transactions are
+disabled, as there are no concurrency issues with C<SELECT @@IDENTITY> as it's a
+session variable.
+
+=head1 TRANSACTIONS
+
+Due to limitations of the TDS protocol, L<DBD::Sybase>, or both; you cannot
+begin a transaction while there are active cursors; nor can you use multiple
+active cursors within a transaction. An active cursor is, for example, a
+L<ResultSet|DBIx::Class::ResultSet> that has been executed using C<next> or
+C<first> but has not been exhausted or L<reset|DBIx::Class::ResultSet/reset>.
+
+For example, this will not work:
+
+  $schema->txn_do(sub {
+    my $rs = $schema->resultset('Book');
+    while (my $row = $rs->next) {
+      $schema->resultset('MetaData')->create({
+        book_id => $row->id,
+        ...
+      });
+    }
+  });
+
+This won't either:
+
+  my $first_row = $large_rs->first;
+  $schema->txn_do(sub { ... });
+
+Transactions done for inserts in C<AutoCommit> mode when placeholders are in use
+are not affected, as they are done on an extra database handle.
+
+Some workarounds:
+
+=over 4
+
+=item * use L<DBIx::Class::Storage::DBI::Replicated>
+
+=item * L<connect|DBIx::Class::Schema/connect> another L<Schema|DBIx::Class::Schema>
+
+=item * load the data from your cursor with L<DBIx::Class::ResultSet/all>
+
+=back
+
+=head1 MAXIMUM CONNECTIONS
+
+The TDS protocol makes separate connections to the server for active statements
+in the background. By default the number of such connections is limited to 25,
+on both the client side and the server side.
+
+This is a bit too low for a complex L<DBIx::Class> application, so on connection
+the client side setting is set to C<256> (see L<DBD::Sybase/maxConnect>.) You
+can override it to whatever setting you like in the DSN.
+
+See
+L<http://infocenter.sybase.com/help/index.jsp?topic=/com.sybase.help.ase_15.0.sag1/html/sag1/sag1272.htm>
+for information on changing the setting on the server side.
+
+=head1 DATES
+
+See L</connect_call_datetime_setup> to setup date formats
+for L<DBIx::Class::InflateColumn::DateTime>.
+
+=head1 TEXT/IMAGE COLUMNS
+
+L<DBD::Sybase> compiled with FreeTDS will B<NOT> allow you to insert or update
+C<TEXT/IMAGE> columns.
+
+Setting C<< $dbh->{LongReadLen} >> will also not work with FreeTDS use either:
+
+  $schema->storage->dbh->do("SET TEXTSIZE $bytes");
+
+or
+
+  $schema->storage->set_textsize($bytes);
+
+instead.
+
+However, the C<LongReadLen> you pass in
+L<DBIx::Class::Storage::DBI/connect_info> is used to execute the equivalent
+C<SET TEXTSIZE> command on connection.
+
+See L</connect_call_blob_setup> for a L<DBIx::Class::Storage::DBI/connect_info>
+setting you need to work with C<IMAGE> columns.
+
+=head1 BULK API
+
+The experimental L<DBD::Sybase> Bulk API support is used for
+L<populate|DBIx::Class::ResultSet/populate> in B<void> context, in a transaction
+on a separate connection.
+
+To use this feature effectively, use a large number of rows for each
+L<populate|DBIx::Class::ResultSet/populate> call, eg.:
+
+  while (my $rows = $data_source->get_100_rows()) {
+    $rs->populate($rows);
+  }
+
+B<NOTE:> the L<add_columns|DBIx::Class::ResultSource/add_columns>
+calls in your C<Result> classes B<must> list columns in database order for this
+to work. Also, you may have to unset the C<LANG> environment variable before
+loading your app, if it doesn't match the character set of your database.
+
+When inserting IMAGE columns using this method, you'll need to use
+L</connect_call_blob_setup> as well.
+
+=head1 TODO
+
+=over
+
+=item *
+
+Transitions to AutoCommit=0 (starting a transaction) mode by exhausting
+any active cursors, using eager cursors.
+
+=item *
+
+Real limits and limited counts using stored procedures deployed on startup.
+
+=item *
+
+Adaptive Server Anywhere (ASA) support, with possible SQLA::Limit support.
 
-This subclass supports L<DBD::Sybase> for real Sybase databases.  If
-you are using an MSSQL database via L<DBD::Sybase>, see
-L<DBIx::Class::Storage::DBI::Sybase::MSSQL>.
+=item *
 
-=head1 CAVEATS
+Blob update with a LIKE query on a blob, without invalidating the WHERE condition.
 
-This storage driver uses L<DBIx::Class::Storage::DBI::NoBindVars> as a base.
-This means that bind variables will be interpolated (properly quoted of course)
-into the SQL query itself, without using bind placeholders.
+=item *
 
-More importantly this means that caching of prepared statements is explicitly
-disabled, as the interpolation renders it useless.
+bulk_insert using prepare_cached (see comments.)
 
-=head1 AUTHORS
+=back
 
-Brandon L Black <blblack@gmail.com>
+=head1 AUTHOR
 
-Justin Hunter <justin.d.hunter@gmail.com>
+See L<DBIx::Class/CONTRIBUTORS>.
 
 =head1 LICENSE
 
 You may distribute this code under the same terms as Perl itself.
 
 =cut
+# vim:sts=2 sw=2:
diff --git a/lib/DBIx/Class/Storage/DBI/Sybase/Base.pm b/lib/DBIx/Class/Storage/DBI/Sybase/Base.pm
deleted file mode 100644
index 757d4d9..0000000
--- a/lib/DBIx/Class/Storage/DBI/Sybase/Base.pm
+++ /dev/null
@@ -1,54 +0,0 @@
-package # hide from PAUSE
-    DBIx::Class::Storage::DBI::Sybase::Base;
-
-use strict;
-use warnings;
-
-use base qw/DBIx::Class::Storage::DBI/;
-use mro 'c3';
-
-=head1 NAME
-
-DBIx::Class::Storage::DBI::Sybase::Base - Common functionality for drivers using
-DBD::Sybase
-
-=cut
-
-sub _ping {
-  my $self = shift;
-
-  my $dbh = $self->_dbh or return 0;
-
-  local $dbh->{RaiseError} = 1;
-  eval {
-    $dbh->do('select 1');
-  };
-
-  return $@ ? 0 : 1;
-}
-
-sub _placeholders_supported {
-  my $self = shift;
-  my $dbh  = $self->_get_dbh;
-
-  return eval {
-# There's also $dbh->{syb_dynamic_supported} but it can be inaccurate for this
-# purpose.
-    local $dbh->{PrintError} = 0;
-    local $dbh->{RaiseError} = 1;
-# this specifically tests a bind that is NOT a string
-    $dbh->selectrow_array('select 1 where 1 = ?', {}, 1);
-  };
-}
-
-1;
-
-=head1 AUTHORS
-
-See L<DBIx::Class/CONTRIBUTORS>.
-
-=head1 LICENSE
-
-You may distribute this code under the same terms as Perl itself.
-
-=cut
diff --git a/lib/DBIx/Class/Storage/DBI/Sybase/Common.pm b/lib/DBIx/Class/Storage/DBI/Sybase/Common.pm
new file mode 100644
index 0000000..af4c916
--- /dev/null
+++ b/lib/DBIx/Class/Storage/DBI/Sybase/Common.pm
@@ -0,0 +1,111 @@
+package DBIx::Class::Storage::DBI::Sybase::Common;
+
+use strict;
+use warnings;
+
+use base qw/DBIx::Class::Storage::DBI/;
+use mro 'c3';
+
+=head1 NAME
+
+DBIx::Class::Storage::DBI::Sybase::Common - Common functionality for drivers using
+DBD::Sybase
+
+=head1 DESCRIPTION
+
+This is the base class for L<DBIx::Class::Storage::DBI::Sybase> and
+L<DBIx::Class::Storage::DBI::Sybase::Microsoft_SQL_Server>. It provides some
+utility methods related to L<DBD::Sybase> and the supported functions of the
+database you are connecting to.
+
+=head1 METHODS
+
+=cut
+
+sub _ping {
+  my $self = shift;
+
+  my $dbh = $self->_dbh or return 0;
+
+  local $dbh->{RaiseError} = 1;
+  local $dbh->{PrintError} = 0;
+
+  if ($dbh->{syb_no_child_con}) {
+# ping is impossible with an active statement, we return false if so
+    my $ping = eval { $dbh->ping };
+    return $@ ? 0 : $ping;
+  }
+
+  eval {
+# XXX if the main connection goes stale, does opening another for this statement
+# really determine anything?
+    $dbh->do('select 1');
+  };
+
+  return $@ ? 0 : 1;
+}
+
+sub _set_max_connect {
+  my $self = shift;
+  my $val  = shift || 256;
+
+  my $dsn = $self->_dbi_connect_info->[0];
+
+  return if ref($dsn) eq 'CODE';
+
+  if ($dsn !~ /maxConnect=/) {
+    $self->_dbi_connect_info->[0] = "$dsn;maxConnect=$val";
+    my $connected = defined $self->_dbh;
+    $self->disconnect;
+    $self->ensure_connected if $connected;
+  }
+}
+
+=head2 using_freetds
+
+Whether or not L<DBD::Sybase> was compiled against FreeTDS. If false, it means
+the Sybase OpenClient libraries were used.
+
+=cut
+
+sub using_freetds {
+  my $self = shift;
+
+  return $self->_get_dbh->{syb_oc_version} =~ /freetds/i;
+}
+
+=head2 set_textsize
+
+When using FreeTDS and/or MSSQL, C<< $dbh->{LongReadLen} >> is not available,
+use this function instead. It does:
+
+  $dbh->do("SET TEXTSIZE $bytes");
+
+Takes the number of bytes, or uses the C<LongReadLen> value from your
+L<DBIx::Class/connect_info> if omitted, lastly falls back to the C<32768> which
+is the L<DBD::Sybase> default.
+
+=cut
+
+sub set_textsize {
+  my $self = shift;
+  my $text_size = shift ||
+    eval { $self->_dbi_connect_info->[-1]->{LongReadLen} } ||
+    32768; # the DBD::Sybase default
+
+  return unless defined $text_size;
+
+  $self->_dbh->do("SET TEXTSIZE $text_size");
+}
+
+1;
+
+=head1 AUTHORS
+
+See L<DBIx::Class/CONTRIBUTORS>.
+
+=head1 LICENSE
+
+You may distribute this code under the same terms as Perl itself.
+
+=cut
diff --git a/lib/DBIx/Class/Storage/DBI/Sybase/Microsoft_SQL_Server.pm b/lib/DBIx/Class/Storage/DBI/Sybase/Microsoft_SQL_Server.pm
index ad5b63d..3d83020 100644
--- a/lib/DBIx/Class/Storage/DBI/Sybase/Microsoft_SQL_Server.pm
+++ b/lib/DBIx/Class/Storage/DBI/Sybase/Microsoft_SQL_Server.pm
@@ -4,7 +4,7 @@ use strict;
 use warnings;
 
 use base qw/
-  DBIx::Class::Storage::DBI::Sybase::Base
+  DBIx::Class::Storage::DBI::Sybase::Common
   DBIx::Class::Storage::DBI::MSSQL
 /;
 use mro 'c3';
@@ -18,14 +18,15 @@ sub _rebless {
       'DBIx::Class::Storage::DBI::Sybase::Microsoft_SQL_Server::NoBindVars';
     $self->_rebless;
   }
+}
 
-# LongReadLen doesn't work with MSSQL through DBD::Sybase, and the default is
-# huge on some versions of SQL server and can cause memory problems, so we
-# fix it up here.
-  my $text_size = eval { $self->_dbi_connect_info->[-1]->{LongReadLen} } ||
-    32768; # the DBD::Sybase default
+sub _init {
+  my $self = shift;
 
-  $dbh->do("set textsize $text_size");
+  # LongReadLen doesn't work with MSSQL through DBD::Sybase, and the default is
+  # huge on some versions of SQL server and can cause memory problems, so we
+  # fix it up here (see Sybase/Common.pm)
+  $self->set_textsize;
 }
 
 1;
diff --git a/lib/DBIx/Class/Storage/DBI/Sybase/NoBindVars.pm b/lib/DBIx/Class/Storage/DBI/Sybase/NoBindVars.pm
new file mode 100644
index 0000000..32908ee
--- /dev/null
+++ b/lib/DBIx/Class/Storage/DBI/Sybase/NoBindVars.pm
@@ -0,0 +1,102 @@
+package DBIx::Class::Storage::DBI::Sybase::NoBindVars;
+
+use base qw/
+  DBIx::Class::Storage::DBI::NoBindVars
+  DBIx::Class::Storage::DBI::Sybase
+/;
+use mro 'c3';
+use List::Util ();
+use Scalar::Util ();
+
+sub _init {
+  my $self = shift;
+  $self->disable_sth_caching(1);
+  $self->_identity_method('@@IDENTITY');
+  $self->next::method (@_);
+}
+
+sub _fetch_identity_sql { 'SELECT ' . $_[0]->_identity_method }
+
+my $number = sub { Scalar::Util::looks_like_number($_[0]) };
+
+my $decimal = sub { $_[0] =~ /^ [-+]? \d+ (?:\.\d*)? \z/x };
+
+my %noquote = (
+    int => sub { $_[0] =~ /^ [-+]? \d+ \z/x },
+    bit => => sub { $_[0] =~ /^[01]\z/ },
+    money => sub { $_[0] =~ /^\$ \d+ (?:\.\d*)? \z/x },
+    float => $number,
+    real => $number,
+    double => $number,
+    decimal => $decimal,
+    numeric => $decimal,
+);
+
+sub interpolate_unquoted {
+  my $self = shift;
+  my ($type, $value) = @_;
+
+  return $self->next::method(@_) if not defined $value or not defined $type;
+
+  if (my $key = List::Util::first { $type =~ /$_/i } keys %noquote) {
+    return 1 if $noquote{$key}->($value);
+  }
+  elsif ($self->is_datatype_numeric($type) && $number->($value)) {
+    return 1;
+  }
+
+  return $self->next::method(@_);
+}
+
+sub _prep_interpolated_value {
+  my ($self, $type, $value) = @_;
+
+  if ($type =~ /money/i && defined $value) {
+    # change a ^ not followed by \$ to a \$
+    $value =~ s/^ (?! \$) /\$/x;
+  }
+
+  return $value;
+}
+
+1;
+
+=head1 NAME
+
+DBIx::Class::Storage::DBI::Sybase::NoBindVars - Storage::DBI subclass for Sybase
+without placeholder support
+
+=head1 DESCRIPTION
+
+If you're using this driver than your version of Sybase, or the libraries you
+use to connect to it, do not support placeholders.
+
+You can also enable this driver explicitly using:
+
+  my $schema = SchemaClass->clone;
+  $schema->storage_type('::DBI::Sybase::NoBindVars');
+  $schema->connect($dsn, $user, $pass, \%opts);
+
+See the discussion in L<< DBD::Sybase/Using ? Placeholders & bind parameters to
+$sth->execute >> for details on the pros and cons of using placeholders.
+
+One advantage of not using placeholders is that C<select @@identity> will work
+for obtainging the last insert id of an C<IDENTITY> column, instead of having to
+do C<select max(col)> in a transaction as the base Sybase driver does.
+
+When using this driver, bind variables will be interpolated (properly quoted of
+course) into the SQL query itself, without using placeholders.
+
+The caching of prepared statements is also explicitly disabled, as the
+interpolation renders it useless.
+
+=head1 AUTHORS
+
+See L<DBIx::Class/CONTRIBUTORS>.
+
+=head1 LICENSE
+
+You may distribute this code under the same terms as Perl itself.
+
+=cut
+# vim:sts=2 sw=2:
diff --git a/t/100populate.t b/t/100populate.t
index ec765aa..ada70d9 100644
--- a/t/100populate.t
+++ b/t/100populate.t
@@ -6,8 +6,6 @@ use Test::Exception;
 use lib qw(t/lib);
 use DBICTest;
 
-plan tests => 23;
-
 my $schema = DBICTest->init_schema();
 
 # The map below generates stuff like:
@@ -116,3 +114,86 @@ is($link7->id, 7, 'Link 7 id');
 is($link7->url, undef, 'Link 7 url');
 is($link7->title, 'gtitle', 'Link 7 title');
 
+# test _execute_array_empty (insert_bulk with all literal sql)
+my $rs = $schema->resultset('Artist');
+$rs->delete;
+$rs->populate([
+    (+{
+        name => \"'DT'",
+        rank => \500,
+        charfield => \"'mtfnpy'",
+    }) x 5
+]);
+
+is((grep {
+  $_->name eq 'DT' &&
+  $_->rank == 500  &&
+  $_->charfield eq 'mtfnpy'
+} $rs->all), 5, 'populate with all literal SQL');
+
+$rs->delete;
+
+throws_ok {
+    $rs->populate([
+        {
+            artistid => 1,
+            name => 'foo1',
+        },
+        {
+            artistid => 'foo', # this dies
+            name => 'foo2',
+        },
+        {
+            artistid => 3,
+            name => 'foo3',
+        },
+    ]);
+} qr/slice/, 'bad slice';
+
+is($rs->count, 0, 'populate is atomic');
+
+# Trying to use a column marked as a bind in the first slice with literal sql in
+# a later slice should throw.
+
+throws_ok {
+  $rs->populate([
+    {
+      artistid => 1,
+      name => \"'foo'",
+    },
+    {
+      artistid => \2,
+      name => \"'foo'",
+    }
+  ]);
+} qr/bind expected/, 'literal sql where bind expected throws';
+
+# ... and vice-versa.
+
+throws_ok {
+  $rs->populate([
+    {
+      artistid => \1,
+      name => \"'foo'",
+    },
+    {
+      artistid => 2,
+      name => \"'foo'",
+    }
+  ]);
+} qr/literal SQL expected/i, 'bind where literal sql expected throws';
+
+throws_ok {
+  $rs->populate([
+    {
+      artistid => 1,
+      name => \"'foo'",
+    },
+    {
+      artistid => 2,
+      name => \"'bar'",
+    }
+  ]);
+} qr/inconsistent/, 'literal sql must be the same in all slices';
+
+done_testing;
diff --git a/t/746mssql.t b/t/746mssql.t
index a75001e..f120c12 100644
--- a/t/746mssql.t
+++ b/t/746mssql.t
@@ -143,14 +143,11 @@ $schema->storage->dbh_do (sub {
     my ($storage, $dbh) = @_;
     eval { $dbh->do("DROP TABLE money_test") };
     $dbh->do(<<'SQL');
-
 CREATE TABLE money_test (
    id INT IDENTITY PRIMARY KEY,
    amount MONEY NULL
 )
-
 SQL
-
 });
 
 my $rs = $schema->resultset('Money');
diff --git a/t/746sybase.t b/t/746sybase.t
index 677d78a..295b76a 100644
--- a/t/746sybase.t
+++ b/t/746sybase.t
@@ -1,91 +1,589 @@
 use strict;
-use warnings;
+use warnings;  
+no warnings 'uninitialized';
 
 use Test::More;
 use Test::Exception;
 use lib qw(t/lib);
 use DBICTest;
 
+require DBIx::Class::Storage::DBI::Sybase;
+require DBIx::Class::Storage::DBI::Sybase::NoBindVars;
+
 my ($dsn, $user, $pass) = @ENV{map { "DBICTEST_SYBASE_${_}" } qw/DSN USER PASS/};
 
-plan skip_all => 'Set $ENV{DBICTEST_SYBASE_DSN}, _USER and _PASS to run this test'
-  unless ($dsn && $user);
+my $TESTS = 63 + 2;
+
+if (not ($dsn && $user)) {
+  plan skip_all =>
+    'Set $ENV{DBICTEST_SYBASE_DSN}, _USER and _PASS to run this test' .
+    "\nWarning: This test drops and creates the tables " .
+    "'artist', 'money_test' and 'bindtype_test'";
+} else {
+  plan tests => $TESTS*2 + 1;
+}
+
+my @storage_types = (
+  'DBI::Sybase',
+  'DBI::Sybase::NoBindVars',
+);
+my $schema;
+my $storage_idx = -1;
 
-plan tests => 13;
+sub get_schema {
+  DBICTest::Schema->connect($dsn, $user, $pass, {
+    on_connect_call => [
+      [ blob_setup => log_on_update => 1 ], # this is a safer option
+    ],
+  });
+}
+
+my $ping_count = 0;
+{
+  my $ping = DBIx::Class::Storage::DBI::Sybase->can('_ping');
+  *DBIx::Class::Storage::DBI::Sybase::_ping = sub {
+    $ping_count++;
+    goto $ping;
+  };
+}
 
-my $schema = DBICTest::Schema->connect($dsn, $user, $pass, {AutoCommit => 1});
+for my $storage_type (@storage_types) {
+  $storage_idx++;
 
-# start disconnected to test reconnection
-$schema->storage->ensure_connected;
-$schema->storage->_dbh->disconnect;
+  unless ($storage_type eq 'DBI::Sybase') { # autodetect
+    DBICTest::Schema->storage_type("::$storage_type");
+  }
 
-isa_ok( $schema->storage, 'DBIx::Class::Storage::DBI::Sybase' );
+  $schema = get_schema();
 
-my $dbh;
-lives_ok (sub {
-  $dbh = $schema->storage->dbh;
-}, 'reconnect works');
+  $schema->storage->ensure_connected;
 
-$schema->storage->dbh_do (sub {
-    my ($storage, $dbh) = @_;
-    eval { $dbh->do("DROP TABLE artist") };
-    $dbh->do(<<'SQL');
+  if ($storage_idx == 0 &&
+      $schema->storage->isa('DBIx::Class::Storage::DBI::Sybase::NoBindVars')) {
+# no placeholders in this version of Sybase or DBD::Sybase (or using FreeTDS)
+      my $tb = Test::More->builder;
+      $tb->skip('no placeholders') for 1..$TESTS;
+      next;
+  }
 
+  isa_ok( $schema->storage, "DBIx::Class::Storage::$storage_type" );
+
+  $schema->storage->_dbh->disconnect;
+  lives_ok (sub { $schema->storage->dbh }, 'reconnect works');
+
+  $schema->storage->dbh_do (sub {
+      my ($storage, $dbh) = @_;
+      eval { $dbh->do("DROP TABLE artist") };
+      $dbh->do(<<'SQL');
 CREATE TABLE artist (
-   artistid INT IDENTITY NOT NULL,
+   artistid INT IDENTITY PRIMARY KEY,
    name VARCHAR(100),
    rank INT DEFAULT 13 NOT NULL,
-   charfield CHAR(10) NULL,
-   primary key(artistid)
+   charfield CHAR(10) NULL
 )
-
 SQL
+  });
 
-});
+  my %seen_id;
 
-my %seen_id;
-
-# fresh $schema so we start unconnected
-$schema = DBICTest::Schema->connect($dsn, $user, $pass, {AutoCommit => 1});
+# so we start unconnected
+  $schema->storage->disconnect;
 
 # test primary key handling
-my $new = $schema->resultset('Artist')->create({ name => 'foo' });
-ok($new->artistid > 0, "Auto-PK worked");
+  my $new = $schema->resultset('Artist')->create({ name => 'foo' });
+  ok($new->artistid > 0, "Auto-PK worked");
 
-$seen_id{$new->artistid}++;
+  $seen_id{$new->artistid}++;
 
-# test LIMIT support
-for (1..6) {
+# check redispatch to storage-specific insert when auto-detected storage
+  if ($storage_type eq 'DBI::Sybase') {
+    DBICTest::Schema->storage_type('::DBI');
+    $schema = get_schema();
+  }
+
+  $new = $schema->resultset('Artist')->create({ name => 'Artist 1' });
+  is ( $seen_id{$new->artistid}, undef, 'id for Artist 1 is unique' );
+  $seen_id{$new->artistid}++;
+
+# inserts happen in a txn, so we make sure it still works inside a txn too
+  $schema->txn_begin;
+
+  for (2..6) {
     $new = $schema->resultset('Artist')->create({ name => 'Artist ' . $_ });
     is ( $seen_id{$new->artistid}, undef, "id for Artist $_ is unique" );
     $seen_id{$new->artistid}++;
-}
+  }
 
-my $it;
+  $schema->txn_commit;
 
-$it = $schema->resultset('Artist')->search( {}, {
+# test simple count
+  is ($schema->resultset('Artist')->count, 7, 'count(*) of whole table ok');
+
+# test LIMIT support
+  my $it = $schema->resultset('Artist')->search({
+    artistid => { '>' => 0 }
+  }, {
     rows => 3,
     order_by => 'artistid',
-});
+  });
 
-TODO: {
-    local $TODO = 'Sybase is very very fucked in the limit department';
+  is( $it->count, 3, "LIMIT count ok" );
 
-    is( $it->count, 3, "LIMIT count ok" );
-}
+  is( $it->next->name, "foo", "iterator->next ok" );
+  $it->next;
+  is( $it->next->name, "Artist 2", "iterator->next ok" );
+  is( $it->next, undef, "next past end of resultset ok" );
+
+# now try with offset
+  $it = $schema->resultset('Artist')->search({}, {
+    rows => 3,
+    offset => 3,
+    order_by => 'artistid',
+  });
+
+  is( $it->count, 3, "LIMIT with offset count ok" );
+
+  is( $it->next->name, "Artist 3", "iterator->next ok" );
+  $it->next;
+  is( $it->next->name, "Artist 5", "iterator->next ok" );
+  is( $it->next, undef, "next past end of resultset ok" );
+
+# now try a grouped count
+  $schema->resultset('Artist')->create({ name => 'Artist 6' })
+    for (1..6);
+
+  $it = $schema->resultset('Artist')->search({}, {
+    group_by => 'name'
+  });
+
+  is( $it->count, 7, 'COUNT of GROUP_BY ok' );
+
+# do an IDENTITY_INSERT
+  {
+    no warnings 'redefine';
+
+    my @debug_out;
+    local $schema->storage->{debug} = 1;
+    local $schema->storage->debugobj->{callback} = sub {
+      push @debug_out, $_[1];
+    };
+
+    my $txn_used = 0;
+    my $txn_commit = \&DBIx::Class::Storage::DBI::txn_commit;
+    local *DBIx::Class::Storage::DBI::txn_commit = sub {
+      $txn_used = 1;
+      goto &$txn_commit;
+    };
+
+    $schema->resultset('Artist')
+      ->create({ artistid => 999, name => 'mtfnpy' });
+
+    ok((grep /IDENTITY_INSERT/i, @debug_out), 'IDENTITY_INSERT used');
+
+    SKIP: {
+      skip 'not testing lack of txn on IDENTITY_INSERT with NoBindVars', 1
+        if $storage_type =~ /NoBindVars/i;
+
+      is $txn_used, 0, 'no txn on insert with IDENTITY_INSERT';
+    }
+  }
+
+# do an IDENTITY_UPDATE
+  {
+    my @debug_out;
+    local $schema->storage->{debug} = 1;
+    local $schema->storage->debugobj->{callback} = sub {
+      push @debug_out, $_[1];
+    };
+
+    lives_and {
+      $schema->resultset('Artist')
+        ->find(999)->update({ artistid => 555 });
+      ok((grep /IDENTITY_UPDATE/i, @debug_out));
+    } 'IDENTITY_UPDATE used';
+    $ping_count-- if $@;
+  }
+
+  my $bulk_rs = $schema->resultset('Artist')->search({
+    name => { -like => 'bulk artist %' }
+  });
+
+# test insert_bulk using populate.
+  SKIP: {
+    skip 'insert_bulk not supported', 4
+      unless $storage_type !~ /NoBindVars/i;
+
+    lives_ok {
+      $schema->resultset('Artist')->populate([
+        {
+          name => 'bulk artist 1',
+          charfield => 'foo',
+        },
+        {
+          name => 'bulk artist 2',
+          charfield => 'foo',
+        },
+        {
+          name => 'bulk artist 3',
+          charfield => 'foo',
+        },
+      ]);
+    } 'insert_bulk via populate';
+
+    is $bulk_rs->count, 3, 'correct number inserted via insert_bulk';
+
+    is ((grep $_->charfield eq 'foo', $bulk_rs->all), 3,
+      'column set correctly via insert_bulk');
+
+    my %bulk_ids;
+    @bulk_ids{map $_->artistid, $bulk_rs->all} = ();
+
+    is ((scalar keys %bulk_ids), 3,
+      'identities generated correctly in insert_bulk');
+
+    $bulk_rs->delete;
+  }
+
+# make sure insert_bulk works a second time on the same connection
+  SKIP: {
+    skip 'insert_bulk not supported', 3
+      unless $storage_type !~ /NoBindVars/i;
+
+    lives_ok {
+      $schema->resultset('Artist')->populate([
+        {
+          name => 'bulk artist 1',
+          charfield => 'bar',
+        },
+        {
+          name => 'bulk artist 2',
+          charfield => 'bar',
+        },
+        {
+          name => 'bulk artist 3',
+          charfield => 'bar',
+        },
+      ]);
+    } 'insert_bulk via populate called a second time';
+
+    is $bulk_rs->count, 3,
+      'correct number inserted via insert_bulk';
+
+    is ((grep $_->charfield eq 'bar', $bulk_rs->all), 3,
+      'column set correctly via insert_bulk');
+
+    $bulk_rs->delete;
+  }
+
+# test invalid insert_bulk (missing required column)
+#
+# There should be a rollback, reconnect and the next valid insert_bulk should
+# succeed.
+  throws_ok {
+    $schema->resultset('Artist')->populate([
+      {
+        charfield => 'foo',
+      }
+    ]);
+  } qr/no value or default|does not allow null|placeholders/i,
+# The second pattern is the error from fallback to regular array insert on
+# incompatible charset.
+# The third is for ::NoBindVars with no syb_has_blk.
+  'insert_bulk with missing required column throws error';
 
-# The iterator still works correctly with rows => 3, even though the sql is
-# fucked, very interesting.
+# now test insert_bulk with IDENTITY_INSERT
+  SKIP: {
+    skip 'insert_bulk not supported', 3
+      unless $storage_type !~ /NoBindVars/i;
 
-is( $it->next->name, "foo", "iterator->next ok" );
-$it->next;
-is( $it->next->name, "Artist 2", "iterator->next ok" );
-is( $it->next, undef, "next past end of resultset ok" );
+    lives_ok {
+      $schema->resultset('Artist')->populate([
+        {
+          artistid => 2001,
+          name => 'bulk artist 1',
+          charfield => 'foo',
+        },
+        {
+          artistid => 2002,
+          name => 'bulk artist 2',
+          charfield => 'foo',
+        },
+        {
+          artistid => 2003,
+          name => 'bulk artist 3',
+          charfield => 'foo',
+        },
+      ]);
+    } 'insert_bulk with IDENTITY_INSERT via populate';
 
+    is $bulk_rs->count, 3,
+      'correct number inserted via insert_bulk with IDENTITY_INSERT';
+
+    is ((grep $_->charfield eq 'foo', $bulk_rs->all), 3,
+      'column set correctly via insert_bulk with IDENTITY_INSERT');
+
+    $bulk_rs->delete;
+  }
+
+# test correlated subquery
+  my $subq = $schema->resultset('Artist')->search({ artistid => { '>' => 3 } })
+    ->get_column('artistid')
+    ->as_query;
+  my $subq_rs = $schema->resultset('Artist')->search({
+    artistid => { -in => $subq }
+  });
+  is $subq_rs->count, 11, 'correlated subquery';
+
+# mostly stolen from the blob stuff Nniuq wrote for t/73oracle.t
+  SKIP: {
+    skip 'TEXT/IMAGE support does not work with FreeTDS', 22
+      if $schema->storage->using_freetds;
+
+    my $dbh = $schema->storage->_dbh;
+    {
+      local $SIG{__WARN__} = sub {};
+      eval { $dbh->do('DROP TABLE bindtype_test') };
+
+      $dbh->do(qq[
+        CREATE TABLE bindtype_test 
+        (
+          id    INT   IDENTITY PRIMARY KEY,
+          bytea IMAGE NULL,
+          blob  IMAGE NULL,
+          clob  TEXT  NULL
+        )
+      ],{ RaiseError => 1, PrintError => 0 });
+    }
+
+    my %binstr = ( 'small' => join('', map { chr($_) } ( 1 .. 127 )) );
+    $binstr{'large'} = $binstr{'small'} x 1024;
+
+    my $maxloblen = length $binstr{'large'};
+    
+    if (not $schema->storage->using_freetds) {
+      $dbh->{'LongReadLen'} = $maxloblen * 2;
+    } else {
+      $dbh->do("set textsize ".($maxloblen * 2));
+    }
+
+    my $rs = $schema->resultset('BindType');
+    my $last_id;
+
+    foreach my $type (qw(blob clob)) {
+      foreach my $size (qw(small large)) {
+        no warnings 'uninitialized';
+
+        my $created;
+        lives_ok {
+          $created = $rs->create( { $type => $binstr{$size} } )
+        } "inserted $size $type without dying";
+
+        $last_id = $created->id if $created;
+
+        lives_and {
+          ok($rs->find($last_id)->$type eq $binstr{$size})
+        } "verified inserted $size $type";
+      }
+    }
+
+    $rs->delete;
+
+    # blob insert with explicit PK
+    # also a good opportunity to test IDENTITY_INSERT
+    lives_ok {
+      $rs->create( { id => 1, blob => $binstr{large} } )
+    } 'inserted large blob without dying with manual PK';
+
+    lives_and {
+      ok($rs->find(1)->blob eq $binstr{large})
+    } 'verified inserted large blob with manual PK';
+
+    # try a blob update
+    my $new_str = $binstr{large} . 'mtfnpy';
+
+    # check redispatch to storage-specific update when auto-detected storage
+    if ($storage_type eq 'DBI::Sybase') {
+      DBICTest::Schema->storage_type('::DBI');
+      $schema = get_schema();
+    }
+
+    lives_ok {
+      $rs->search({ id => 1 })->update({ blob => $new_str })
+    } 'updated blob successfully';
+
+    lives_and {
+      ok($rs->find(1)->blob eq $new_str)
+    } 'verified updated blob';
+
+    # try a blob update with IDENTITY_UPDATE
+    lives_and {
+      $new_str = $binstr{large} . 'hlagh';
+      $rs->find(1)->update({ id => 999, blob => $new_str });
+      ok($rs->find(999)->blob eq $new_str);
+    } 'verified updated blob with IDENTITY_UPDATE';
+
+    ## try multi-row blob update
+    # first insert some blobs
+    $new_str = $binstr{large} . 'foo';
+    lives_and {
+      $rs->delete;
+      $rs->create({ blob => $binstr{large} }) for (1..2);
+      $rs->update({ blob => $new_str });
+      is((grep $_->blob eq $new_str, $rs->all), 2);
+    } 'multi-row blob update';
+
+    $rs->delete;
+
+    # now try insert_bulk with blobs and only blobs
+    $new_str = $binstr{large} . 'bar';
+    lives_ok {
+      $rs->populate([
+        {
+          bytea => 1,
+          blob => $binstr{large},
+          clob => $new_str,
+        },
+        {
+          bytea => 1,
+          blob => $binstr{large},
+          clob => $new_str,
+        },
+      ]);
+    } 'insert_bulk with blobs does not die';
+
+    is((grep $_->blob eq $binstr{large}, $rs->all), 2,
+      'IMAGE column set correctly via insert_bulk');
+
+    is((grep $_->clob eq $new_str, $rs->all), 2,
+      'TEXT column set correctly via insert_bulk');
+
+    # now try insert_bulk with blobs and a non-blob which also happens to be an
+    # identity column
+    SKIP: {
+      skip 'no insert_bulk without placeholders', 4
+        if $storage_type =~ /NoBindVars/i;
+
+      $rs->delete;
+      $new_str = $binstr{large} . 'bar';
+      lives_ok {
+        $rs->populate([
+          {
+            id => 1,
+            bytea => 1,
+            blob => $binstr{large},
+            clob => $new_str,
+          },
+          {
+            id => 2,
+            bytea => 1,
+            blob => $binstr{large},
+            clob => $new_str,
+          },
+        ]);
+      } 'insert_bulk with blobs and explicit identity does NOT die';
+
+      is((grep $_->blob eq $binstr{large}, $rs->all), 2,
+        'IMAGE column set correctly via insert_bulk with identity');
+
+      is((grep $_->clob eq $new_str, $rs->all), 2,
+        'TEXT column set correctly via insert_bulk with identity');
+
+      is_deeply [ map $_->id, $rs->all ], [ 1,2 ],
+        'explicit identities set correctly via insert_bulk with blobs';
+    }
+
+    lives_and {
+      $rs->delete;
+      $rs->create({ blob => $binstr{large} }) for (1..2);
+      $rs->update({ blob => undef });
+      is((grep !defined($_->blob), $rs->all), 2);
+    } 'blob update to NULL';
+  }
+
+# test MONEY column support (and some other misc. stuff)
+  $schema->storage->dbh_do (sub {
+      my ($storage, $dbh) = @_;
+      eval { $dbh->do("DROP TABLE money_test") };
+      $dbh->do(<<'SQL');
+CREATE TABLE money_test (
+   id INT IDENTITY PRIMARY KEY,
+   amount MONEY DEFAULT $999.99 NULL
+)
+SQL
+  });
+
+  my $rs = $schema->resultset('Money');
+
+# test insert with defaults
+  lives_and {
+    $rs->create({});
+    is((grep $_->amount == 999.99, $rs->all), 1);
+  } 'insert with all defaults works';
+  $rs->delete;
+
+# test insert transaction when there's an active cursor
+  {
+    my $artist_rs = $schema->resultset('Artist');
+    $artist_rs->first;
+    lives_ok {
+      my $row = $schema->resultset('Money')->create({ amount => 100 });
+      $row->delete;
+    } 'inserted a row with an active cursor';
+    $ping_count-- if $@; # dbh_do calls ->connected
+  }
+
+# test insert in an outer transaction when there's an active cursor
+  TODO: {
+    local $TODO = 'this should work once we have eager cursors';
+
+# clear state, or we get a deadlock on $row->delete
+# XXX figure out why this happens
+    $schema->storage->disconnect;
+
+    lives_ok {
+      $schema->txn_do(sub {
+        my $artist_rs = $schema->resultset('Artist');
+        $artist_rs->first;
+        my $row = $schema->resultset('Money')->create({ amount => 100 });
+        $row->delete;
+      });
+    } 'inserted a row with an active cursor in outer txn';
+    $ping_count-- if $@; # dbh_do calls ->connected
+  }
+
+# Now test money values.
+  my $row;
+  lives_ok {
+    $row = $rs->create({ amount => 100 });
+  } 'inserted a money value';
+
+  is eval { $rs->find($row->id)->amount }, 100, 'money value round-trip';
+
+  lives_ok {
+    $row->update({ amount => 200 });
+  } 'updated a money value';
+
+  is eval { $rs->find($row->id)->amount },
+    200, 'updated money value round-trip';
+
+  lives_ok {
+    $row->update({ amount => undef });
+  } 'updated a money value to NULL';
+
+  my $null_amount = eval { $rs->find($row->id)->amount };
+  ok(
+    (($null_amount == undef) && (not $@)),
+    'updated money value to NULL round-trip'
+  );
+  diag $@ if $@;
+}
+
+is $ping_count, 0, 'no pings';
 
 # clean up our mess
 END {
-    my $dbh = eval { $schema->storage->_dbh };
-    $dbh->do('DROP TABLE artist') if $dbh;
+  if (my $dbh = eval { $schema->storage->_dbh }) {
+    eval { $dbh->do("DROP TABLE $_") }
+      for qw/artist bindtype_test money_test/;
+  }
 }
-
diff --git a/t/inflate/datetime_sybase.t b/t/inflate/datetime_sybase.t
new file mode 100644
index 0000000..24d0f07
--- /dev/null
+++ b/t/inflate/datetime_sybase.t
@@ -0,0 +1,85 @@
+use strict;
+use warnings;  
+
+use Test::More;
+use Test::Exception;
+use lib qw(t/lib);
+use DBICTest;
+
+my ($dsn, $user, $pass) = @ENV{map { "DBICTEST_SYBASE_${_}" } qw/DSN USER PASS/};
+
+if (not ($dsn && $user)) {
+  plan skip_all =>
+    'Set $ENV{DBICTEST_SYBASE_DSN}, _USER and _PASS to run this test' .
+    "\nWarning: This test drops and creates a table called 'track'";
+} else {
+  eval "use DateTime; use DateTime::Format::Sybase;";
+  if ($@) {
+    plan skip_all => 'needs DateTime and DateTime::Format::Sybase for testing';
+  }
+  else {
+    plan tests => (4 * 2 * 2) + 2; # (tests * dt_types * storage_types) + storage_tests
+  }
+}
+
+my @storage_types = (
+  'DBI::Sybase',
+  'DBI::Sybase::NoBindVars',
+);
+my $schema;
+
+for my $storage_type (@storage_types) {
+  $schema = DBICTest::Schema->clone;
+
+  unless ($storage_type eq 'DBI::Sybase') { # autodetect
+    $schema->storage_type("::$storage_type");
+  }
+  $schema->connection($dsn, $user, $pass, {
+    AutoCommit => 1,
+    on_connect_call => [ 'datetime_setup' ],
+  });
+
+  $schema->storage->ensure_connected;
+
+  isa_ok( $schema->storage, "DBIx::Class::Storage::$storage_type" );
+
+# coltype, col, date
+  my @dt_types = (
+    ['DATETIME', 'last_updated_at', '2004-08-21T14:36:48.080Z'],
+# minute precision
+    ['SMALLDATETIME', 'small_dt', '2004-08-21T14:36:00.000Z'],
+  );
+  
+  for my $dt_type (@dt_types) {
+    my ($type, $col, $sample_dt) = @$dt_type;
+
+    eval { $schema->storage->dbh->do("DROP TABLE track") };
+    $schema->storage->dbh->do(<<"SQL");
+CREATE TABLE track (
+   trackid INT IDENTITY PRIMARY KEY,
+   cd INT,
+   position INT,
+   $col $type,
+)
+SQL
+    ok(my $dt = DateTime::Format::Sybase->parse_datetime($sample_dt));
+
+    my $row;
+    ok( $row = $schema->resultset('Track')->create({
+          $col => $dt,
+          cd => 1,
+        }));
+    ok( $row = $schema->resultset('Track')
+      ->search({ trackid => $row->trackid }, { select => [$col] })
+      ->first
+    );
+    is( $row->$col, $dt, 'DateTime roundtrip' );
+  }
+}
+
+# clean up our mess
+END {
+  if (my $dbh = eval { $schema->storage->_dbh }) {
+    $dbh->do('DROP TABLE track');
+  }
+}
diff --git a/t/lib/sqlite.sql b/t/lib/sqlite.sql
index a004090..888ccd0 100644
--- a/t/lib/sqlite.sql
+++ b/t/lib/sqlite.sql
@@ -1,6 +1,4 @@
--- 
--- Created by SQL::Translator::Producer::SQLite
--- Created on Mon Sep 21 00:11:34 2009
+-- Created on Tue Aug 25 12:34:34 2009
 --