Hi @CKP
You would like to delete database from Azure SQL server.
As you mentioned one option is to delete from the portal else you can also perform through SQL Server management studio.
To delete a database
1. In Object Explorer, connect to an instance of the SQL Server Database Engine, and then expand that instance.
2. Expand Databases, right-click the database to delete, and then select Delete.
3. Confirm the correct database is selected, and then select OK.
or Using Transact-SQL
For more information, see DROP DATABASE (Transact-SQL).
To delete a database
1. Connect to the Database Engine.
2. From the Standard bar, select New Query.
3. Copy and paste the following example into the query window and select Execute. This example removes the Sales and NewSales databases.
USE master ;
GO
DROP DATABASE Sales, NewSales ;
GO
Reference document- https://learn.microsoft.com/en-us/sql/relational-databases/databases/delete-a-database?view=sql-server-ver16
Thank you!