South is pretty great for very simplistic migrations. However, it does not issue DDL efficiently. For example, if you're adding two columns to a table, it will

South is pretty great for very simplistic migrations. However, it does not issue DDL efficiently. For example, if you're adding two columns to a table, it will issue two separate ALTER TABLE statements. Depending on your database and table size, that can take twice as long as needed. It can really add up when your tables start hitting millions of records.