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UUID

uuid

UUID type

= != ?= ?!= < > <= >=

Comparison operators

uuid_generate_v1mc()

Return a version 1 UUID.

type
uuid
uuid

Universally Unique Identifiers (UUID).

For formal definition see RFC 4122 and ISO/IEC 9834-8:2005.

Every Object has a globally unique property id represented by a UUID value.

function
uuid_generate_v1mc()
std::uuid_generate_v1mc() -> uuid

Return a version 1 UUID.

The algorithm uses a random multicast MAC address instead of the real MAC address of the computer.

Copy
db> 
select uuid_generate_v1mc();
{1893e2b6-57ce-11e8-8005-13d4be166783}
function
std::uuid_generate_v4()
std::uuid_generate_v4() -> uuid

Return a version 4 UUID.

The UUID is derived entirely from random numbers.

Copy
db> 
select uuid_generate_v4();
{92673afc-9c4f-42b3-8273-afe0053f0f48}
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