diff --git a/lib/rdbi/driver/odbc.rb b/lib/rdbi/driver/odbc.rb
index 29ab15e..e58a5fa 100644
--- a/lib/rdbi/driver/odbc.rb
+++ b/lib/rdbi/driver/odbc.rb
@@ -13,33 +13,34 @@ def initialize(*args)
 class RDBI::Driver::ODBC < RDBI::Driver
 
   SQL_TYPES = {
-      1 => {:type => "CHAR",           :ruby_type => :default},
-      2 => {:type => "NUMERIC",        :ruby_type => :decimal},
-      3 => {:type => "DECIMAL",        :ruby_type => :decimal},
-      4 => {:type => "INTEGER",        :ruby_type => :integer},
-      5 => {:type => "SMALLINT",       :ruby_type => :integer},
-      6 => {:type => "FLOAT",          :ruby_type => :decimal},
-      7 => {:type => "REAL",           :ruby_type => :decimal},
-      8 => {:type => "DOUBLE",         :ruby_type => :decimal},
-      9 => {:type => "DATE",           :ruby_type => :date},
-     10 => {:type => "TIME",           :ruby_type => :time},
-     11 => {:type => "TIMESTAMP",      :ruby_type => :timestamp},
-     12 => {:type => "VARCHAR",        :ruby_type => :default},
-     13 => {:type => "BOOLEAN",        :ruby_type => :boolean},
-     91 => {:type => "DATE",           :ruby_type => :date},
-     92 => {:type => "TIME",           :ruby_type => :time},
-     93 => {:type => "TIMESTAMP",      :ruby_type => :timestamp},
-    100 => {:type => nil,              :ruby_type => :default},
-     -1 => {:type => "LONG VARCHAR",   :ruby_type => :default},
-     -2 => {:type => "BINARY",         :ruby_type => :default},
-     -3 => {:type => "VARBINARY",      :ruby_type => :default},
-     -4 => {:type => "LONG VARBINARY", :ruby_type => :default},
-     -5 => {:type => "BIGINT",         :ruby_type => :integer},
-     -6 => {:type => "TINYINT",        :ruby_type => :integer},
-     -7 => {:type => "BIT",            :ruby_type => :default},
-     -8 => {:type => "CHAR",           :ruby_type => :default},
-    -10 => {:type => "BLOB",           :ruby_type => :default},
-    -11 => {:type => "CLOB",           :ruby_type => :default},
+      1 => {:type => "CHAR",             :ruby_type => :default},
+      2 => {:type => "NUMERIC",          :ruby_type => :decimal},
+      3 => {:type => "DECIMAL",          :ruby_type => :decimal},
+      4 => {:type => "INTEGER",          :ruby_type => :integer},
+      5 => {:type => "SMALLINT",         :ruby_type => :integer},
+      6 => {:type => "FLOAT",            :ruby_type => :decimal},
+      7 => {:type => "REAL",             :ruby_type => :decimal},
+      8 => {:type => "DOUBLE",           :ruby_type => :decimal},
+      9 => {:type => "DATE",             :ruby_type => :date},
+     10 => {:type => "TIME",             :ruby_type => :time},
+     11 => {:type => "TIMESTAMP",        :ruby_type => :timestamp},
+     12 => {:type => "VARCHAR",          :ruby_type => :default},
+     13 => {:type => "BOOLEAN",          :ruby_type => :boolean},
+     91 => {:type => "DATE",             :ruby_type => :date},
+     92 => {:type => "TIME",             :ruby_type => :time},
+     93 => {:type => "TIMESTAMP",        :ruby_type => :timestamp},
+    100 => {:type => nil,                :ruby_type => :default},
+     -1 => {:type => "LONG VARCHAR",     :ruby_type => :default},
+     -2 => {:type => "BINARY",           :ruby_type => :default},
+     -3 => {:type => "VARBINARY",        :ruby_type => :default},
+     -4 => {:type => "LONG VARBINARY",   :ruby_type => :default},
+     -5 => {:type => "BIGINT",           :ruby_type => :integer},
+     -6 => {:type => "TINYINT",          :ruby_type => :integer},
+     -7 => {:type => "BIT",              :ruby_type => :default},
+     -8 => {:type => "CHAR",             :ruby_type => :default},
+     -9 => {:type => "UNIQUEIDENTIFIER", :ruby_type => :default},
+    -10 => {:type => "BLOB",             :ruby_type => :default},
+    -11 => {:type => "CLOB",             :ruby_type => :default},
   }
 
   class Database < RDBI::Database