Support identity-key-column judgement on multiple schema environment.

Author: metaskills

CHANGELOG

@@ -1,6 +1,8 @@
 
 MASTER
 
+* Support Identity-key-column judgement on multiple schema environment [Ken Tachiya]
+
 * Add support for tinyint data types. In MySQL all these types would be boolean, however in 
   our adapter, they will use the full 1 => 255 Fixnum value as you would expect. [Ken Collins]
 

lib/active_record/connection_adapters/sqlserver_adapter.rb

@@ -1052,7 +1052,7 @@ def column_definitions(table_name)
             ELSE NULL
           end as is_nullable,
           CASE
-            WHEN COLUMNPROPERTY(OBJECT_ID(columns.TABLE_NAME), columns.COLUMN_NAME, 'IsIdentity') = 0 THEN NULL
+            WHEN COLUMNPROPERTY(OBJECT_ID(columns.TABLE_SCHEMA+'.'+columns.TABLE_NAME), columns.COLUMN_NAME, 'IsIdentity') = 0 THEN NULL
             ELSE 1
           END as is_identity
           FROM #{db_name}INFORMATION_SCHEMA.COLUMNS columns