## Syntax
```mermaid
%%{init: {
'theme': 'base',
'flowchart': { 'padding': '7', 'nodeSpacing': '20', 'rankSpacing': '20' },
'themeVariables': {
'fontSize': '11px',
'fontFamily': 'Arial'
}
}}%%
flowchart LR
Start((START)) --> UUID_GENERATE_V1MC[UUID_GENERATE_V1MC]:::quoted
UUID_GENERATE_V1MC --> End((END))
```
## Purpose
The `UUID_GENERATE_V1MC` SQL function creates a new UUID of version 1 with a random multicast node. PostgreSQL has this function next to `uuid_generate_v1` to avoid the MAC address of the machine in the UUID; Invantive UniversalSQL never uses the MAC address, so `UUID_GENERATE_V1MC` is another name for [[UUID_GENERATE_V1]].
Available from release 28.0.
See also [[UUID_GENERATE_V1]], [[UUID_GENERATE_V6]] and [[UUIDV7]].
Returns: the new UUID, of data type `guid`. Each call creates a UUID of its own.
## Examples
The following example creates a new UUID of version 1 and reads its version:
```sql
select uuid_extract_version(uuid_generate_v1mc()) version
-------
1
```