i need some help with a SQL alter command. i am trying to add a field to my table, but when i do the field is filled with null in any existing rows. how can i just make it fill blank like the value ...

I'm using Iceberg table version 1.9.0 and try to rename table using ALTER TABLE t1 rename to t2 In my current situation, despite having revoked all my permissions, I am still able to change my table ...