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sys.instance_id
Return the UUID, name, and creation time of the current data warehouse instance. For example:
yellowbrick=> select * from sys.instance_id;
id | name | when
--------------------------------------+------------+-------------------------------
ab2161d0-62ae-4cd6-a621-125e20006a59 | bobr070623 | 2023-07-06 22:35:23.864468+00
(1 row)