create indexes inline in CREATE TABLE for MySQL

This is important, because adding an index on a temporary table after
it has been created would commit the transaction

Conflicts:
	activerecord/CHANGELOG.md

1 files changed, 11 insertions, 0 deletions

diff --git a/activerecord/test/cases/adapters/mysql/active_schema_test.rb b/activerecord/test/cases/adapters/mysql/active_schema_test.rb
index e77138eb1d..072aa65000 100644
--- a/activerecord/test/cases/adapters/mysql/active_schema_test.rb
+++ b/activerecord/test/cases/adapters/mysql/active_schema_test.rb
@@ -116,6 +116,17 @@ class ActiveSchemaTest < ActiveRecord::TestCase
     end
   end
 
+  def test_indexes_in_create
+    begin
+      ActiveRecord::Base.connection.stubs(:index_name_exists?).returns(false)
+      expected = "CREATE TEMPORARY TABLE `temp` (INDEX `index_temp_on_zip` (`zip`)) ENGINE=InnoDB AS SELECT id, name, zip FROM a_really_complicated_query"
+      actual = ActiveRecord::Base.connection.create_table(:temp, temporary: true, as: "SELECT id, name, zip FROM a_really_complicated_query") do |t|
+        t.index :zip
+      end
+      assert_equal expected, actual
+    end
+  end
+
   private
     def with_real_execute
       ActiveRecord::Base.connection.singleton_class.class_eval do