migrate 수정 컬럼이 있는경우만 삭제하는 것으로 수정함

Author: max312444

db/migrate/20251106141359_remove_audit_columns_from_reservations.rb

@@ -1,7 +1,7 @@
 class RemoveAuditColumnsFromReservations < ActiveRecord::Migration[8.0]
   def change
-    remove_column :reservations, :created_by, :bigint
-    remove_column :reservations, :updated_by, :bigint
-    remove_column :reservations, :deleted_by, :bigint
+    remove_column :reservations, :created_by, :bigint if column_exists?(:reservations, :created_by)
+    remove_column :reservations, :updated_by, :bigint if column_exists?(:reservations, :updated_by)
+    remove_column :reservations, :deleted_by, :bigint if column_exists?(:reservations, :deleted_by)
   end
 end