AG UUID

NIL UUID nil · zero

A special UUID in which every bit is zero.

Overview

Written as 00000000-0000-0000-0000-000000000000, it is a placeholder that indicates the absence of a value.

Structure

Bit length128
Character length36
Formatall zero
SortableNo
Random-basedNo

When to use

Use it to represent "no value yet," a default, or an initialized state. It is not used as an actual identifier.

Example

NIL UUID
00000000-0000-0000-0000-000000000000

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