How to change data type of column in dynamodb?

@aniya.jaskolski 

In DynamoDB, you cannot directly change the data type of a column. However, you can achieve this by creating a new column with the desired data type, copying the data from the old column to the new column, and then deleting the old column.

Here are the steps to change the data type of a column in DynamoDB:

1. Create a new column with the desired data type in your table schema. You can do this by updating the table definition using the AWS Management Console, AWS CLI, or AWS SDK.
2. Scan or query the table to retrieve the data from the old column.
3. Convert the data to the new data type, if necessary.
4. Update the items in the table to populate the new column with the converted data.
5. Verify that the new column contains the correct data.
6. Delete the old column from the table schema.

Keep in mind that changing the data type of a column in DynamoDB can impact your application's functionality and may require you to update any dependent code or queries. Make sure to test the changes thoroughly before implementing them in a production environment.