0
@@ -1,5 +1,7 @@
0
 *SVN*
0
 
0
+* Added that the MySQL adapter should map integer to either smallint, int, or bigint depending on the :limit just like PostgreSQL [DHH]
0
+
0
 * Change validates_uniqueness_of :case_sensitive option default back to true (from [9160]).  Love your database columns, don't LOWER them.  [rick]
0
 
0
 * Add support for interleaving migrations by storing which migrations have run in the new schema_migrations table. Closes #11493 [jordi]

0
@@ -463,6 +463,22 @@ module ActiveRecord
0
         execute "ALTER TABLE #{quote_table_name(table_name)} CHANGE #{quote_column_name(column_name)} #{quote_column_name(new_column_name)} #{current_type}"
0
       end
0
 
0
+      # Maps logical Rails types to MySQL-specific data types.
0
+      def type_to_sql(type, limit = nil, precision = nil, scale = nil)
0
+        return super unless type.to_s == 'integer'
0
+
0
+        case limit
0
+        when 0..3
0
+          "smallint(#{limit})"
0
+        when 4..8
0
+          "int(#{limit})"
0
+        when 9..20
0
+          "bigint(#{limit})"
0
+        else
0
+          'int(11)'
0
+        end
0
+      end
0
+
0
 
0
       # SHOW VARIABLES LIKE 'name'
0
       def show_variable(name)