如何将 Aurora Mysql ddl 翻译成 Redshift ddl

Question

What would be the best way to list a serie of Auora Mysql ddl objects and translate them to Redshift ddl (data type mapping, PK, encoding)?

Im trying to migrate from Aurora Mysql to Redshift with lambdas, but I need to create target tables first. This operation has to be done before every load, so it needs to be automated.

Answer 1

This can be done using the Database Migration Service

You can use DMS for the following DDL operations, further actions would need to be performed by the Schema Conversion Tool :

• Create table
• Drop table
• Rename table
• Add column
• Drop column
• Rename column
• Change column data type

When you use this service it would need to boot up a resource in your account to perform the operation, so be aware of this as it will have a cost to it.

Answer 2

You can do it with liquibase (or flyway) and jenkins for scheduling as seen in the aws blog .

1. Liquibase's generateChangeLog can create a changelog representing the schema of your mysql db
2. With the generated Changelog you can update the Redshift schema with the latest schema changes from your source