#351

backend/db/migrate/20260622010000_create_post_tag_sections.rb

@@ -4,7 +4,7 @@ class CreatePostTagSections < ActiveRecord::Migration[8.0]
       t.references :post, null: false, foreign_key: true, index: false
       t.references :tag, null: false, foreign_key: true, index: false
       t.integer :begin_ms, null: false
-      t.integer :end_ms, null: false
+      t.integer :end_ms, null: true
       t.timestamps
 
       t.index [:post_id, :begin_ms], name: 'idx_post_tag_sections_post_id_begin_ms'
@@ -12,7 +12,7 @@ class CreatePostTagSections < ActiveRecord::Migration[8.0]
       t.check_constraint 'begin_ms >= 0',
                          name: 'chk_post_tag_sections_begin_ms_natural'
 
-      t.check_constraint 'begin_ms < end_ms',
+      t.check_constraint 'end_ms IS NULL OR begin_ms < end_ms',
                          name: 'chk_post_tag_sections_end_ms_after_begin_ms'
     end
   end