1 files changed, 17 insertions, 6 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb b/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb
index d1baeac6ac..0bf17d3351 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb
@@ -91,6 +91,13 @@ module ActiveRecord
           collation && !collation.match(/_ci$/)
         end
 
+        def ==(other)
+          super &&
+            collation == other.collation &&
+            strict == other.strict &&
+            extra == other.extra
+        end
+
         private
 
         # MySQL misreports NOT NULL column default when none is given.
@@ -109,6 +116,10 @@ module ActiveRecord
             raise ArgumentError, "#{type} columns cannot have a default value: #{default.inspect}"
           end
         end
+
+        def attributes_for_hash
+          super + [collation, strict, extra]
+        end
       end
 
       ##
@@ -645,12 +656,6 @@ module ActiveRecord
       def initialize_type_map(m) # :nodoc:
         super
 
-        m.register_type(%r(enum)i) do |sql_type|
-          limit = sql_type[/^enum\((.+)\)/i, 1]
-            .split(',').map{|enum| enum.strip.length - 2}.max
-          Type::String.new(limit: limit)
-        end
-
         m.register_type %r(tinytext)i,   Type::Text.new(limit: 2**8 - 1)
         m.register_type %r(tinyblob)i,   Type::Binary.new(limit: 2**8 - 1)
         m.register_type %r(text)i,       Type::Text.new(limit: 2**16 - 1)
@@ -671,6 +676,12 @@ module ActiveRecord
         m.alias_type %r(set)i,           'varchar'
         m.alias_type %r(year)i,          'integer'
         m.alias_type %r(bit)i,           'binary'
+
+        m.register_type(%r(enum)i) do |sql_type|
+          limit = sql_type[/^enum\((.+)\)/i, 1]
+            .split(',').map{|enum| enum.strip.length - 2}.max
+          Type::String.new(limit: limit)
+        end
       end
 
       # MySQL is too stupid to create a temporary table for use subquery, so we have