1 files changed, 6 insertions, 2 deletions
diff --git a/activerecord/lib/active_record/schema_migration.rb b/activerecord/lib/active_record/schema_migration.rb
index cb47bf23f7..51b9b17395 100644
--- a/activerecord/lib/active_record/schema_migration.rb
+++ b/activerecord/lib/active_record/schema_migration.rb
@@ -2,7 +2,11 @@ require 'active_record/scoping/default'
 require 'active_record/scoping/named'
 
 module ActiveRecord
-  class SchemaMigration < ActiveRecord::Base
+  # This class is used to create a table that keeps track of which migrations
+  # have been applied to a given database. When a migration is run, its schema
+  # number is inserted in to the `SchemaMigration.table_name` so it doesn't need
+  # to be executed the next time.
+  class SchemaMigration < ActiveRecord::Base # :nodoc:
     class << self
       def primary_key
         nil
@@ -17,7 +21,7 @@ module ActiveRecord
       end
 
       def table_exists?
-        connection.table_exists?(table_name)
+        ActiveSupport::Deprecation.silence { connection.table_exists?(table_name) }
       end
 
       def create_table(limit=nil)