Merge branch 'master' into fuuu

* master:
  Do not show optional (.:format) block for wildcard route [#6605 state:resolved]
  pushing id insertion and prefetch primary keys down to Relation#insert
  use prepared statements to fetch the last insert id
  escaping binary data encoding when inserting to sqlite3. Thanks Naruse! [#6559 state:resolved]
  schemas set by set_table_name are respected by the mysql adapter. [#5322 state:resolved]
  Reapply extensions when using except and only
  SJIS is an alias to Windows-31J in ruby trunk. Use SHIFT_JIS for this test
  Improved resolver docs a bit
  [action_view] docs for FileSystemResolver
  [action_view] added custom patterns to template resolver

1 files changed, 16 insertions, 2 deletions

diff --git a/activerecord/lib/active_record/connection_adapters/mysql_adapter.rb b/activerecord/lib/active_record/connection_adapters/mysql_adapter.rb
index 368c5b2023..e1186209d3 100644
--- a/activerecord/lib/active_record/connection_adapters/mysql_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/mysql_adapter.rb
@@ -504,14 +504,28 @@ module ActiveRecord
         show_variable 'collation_database'
       end
 
-      def tables(name = nil) #:nodoc:
+      def tables(name = nil, database = nil) #:nodoc:
         tables = []
-        result = execute("SHOW TABLES", name)
+        result = execute(["SHOW TABLES", database].compact.join(' IN '), name)
         result.each { |field| tables << field[0] }
         result.free
         tables
       end
 
+      def table_exists?(name)
+        return true if super
+
+        name          = name.to_s
+        schema, table = name.split('.', 2)
+
+        unless table # A table was provided without a schema
+          table  = schema
+          schema = nil
+        end
+
+        tables(nil, schema).include? table
+      end
+
       def drop_table(table_name, options = {})
         super(table_name, options)
       end