mongodb - 数据库在添加新功能的时候，如果需要改动数据库字段一般如何迁移数据

Question

数据库在添加新功能的时候，如果需要改动数据库字段一般如何迁移数据

Answer 1

To change the fields in the table, check the syntax of ALTER TABLE and use SQL commands to modify it.
Another method is to create a new table, import the old data into the new table, then delete the old table and rename the new table