I have a database in Azure SQL. It is 50 GB in size. I made changes to many of its columns, changing nvar to var, deleting rows, but the size remains about the same. I Exported it to a backpac and imported the backpac to a local SQL Server 2016 and the local db shows its size about 34 GB. I am thinking that Azure is not compacting the db after these changes. Is there something I could/should run for Azure to compact the db?