Question

I mostly work with sql-server (when I do work with databases) and I am trying to learn pl-sql.

Is there any equivalent to sql-server’s auto-generated Guid as primary keys in Oracle?

Answer 1

You can use SYS_GUID() to generate a GUID, and use it as DEFAULT value of a column:

CREATE TABLE test_table (
  uid_col RAW(32) DEFAULT SYS_GUID(),
  some_val VARCHAR2(10)
);

EDIT:
See answers to this question for more details.