put migrations into one file

db/migrate/20211119104835_add_property_info_fields.rb

@@ -1,12 +1,13 @@
 class AddPropertyInfoFields < ActiveRecord::Migration[6.1]
   def change
     change_table :case_logs, bulk: true do |t|
-      t.column :do_you_know_the_postcode, :integer
-      t.column :do_you_know_the_local_authority, :integer
+      t.column :do_you_know_the_postcode, :string
+      t.column :do_you_know_the_local_authority, :string
       t.column :why_dont_you_know_la, :string
-      t.column :first_time_property_let_as_social_housing, :integer
-      t.column :type_property_most_recently_let_as, :integer
-      t.column :builtype, :integer
+      t.column :first_time_property_let_as_social_housing, :string
+      t.column :type_property_most_recently_let_as, :string
+      t.column :builtype, :string
+      t.rename :tenant_same_property_renewal, :renewal
     end
   end
 end

db/migrate/20211119142809_change_renewal.rb

@@ -1,7 +0,0 @@
-class ChangeRenewal < ActiveRecord::Migration[6.1]
-  def change
-    rename_column :case_logs, :tenant_same_property_renewal, :renewal
-  end
-end
-
-

db/migrate/20211119154133_change_column_types.rb

@@ -1,21 +0,0 @@
-class ChangeColumnTypes < ActiveRecord::Migration[6.1]
-  def up
-    change_table :case_logs, bulk: true do |t|
-      t.change :first_time_property_let_as_social_housing, :string
-      t.change :type_property_most_recently_let_as, :string
-      t.change :builtype, :string
-      t.change :do_you_know_the_local_authority, :string
-      t.change :do_you_know_the_postcode, :string
-    end
-  end
-
-  def down
-    change_table :case_logs, bulk: true do |t|
-      t.change :first_time_property_let_as_social_housing, :int
-      t.change :type_property_most_recently_let_as, :int
-      t.change :builtype, :int
-      t.change :do_you_know_the_local_authority, :int
-      t.change :do_you_know_the_postcode, :int
-    end
-  end
-end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2021_11_19_154133) do
+ActiveRecord::Schema.define(version: 2021_11_19_104835) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"