The following SQL statement enables to generate a base64 uuid encoded on 96bits (12 octects).

```sql
SELECT (substr(chars, (first & 63)+1, 1) ||
				substr(chars, ((first >> 6) & 63)+1, 1) ||
				substr(chars, ((first >> 12) & 63)+1, 1) ||
				substr(chars, ((first >> 18) & 63)+1, 1) ||
				substr(chars, ((first >> 24) & 63)+1, 1) ||
				substr(chars, ((first >> 30) & 63)+1, 1) ||
				substr(chars, ((first >> 36) & 63)+1, 1) ||
				substr(chars, ((first >> 42) & 63)+1, 1) ||
				substr(chars, (second & 63)+1, 1) ||
				substr(chars, ((second >> 6) & 63)+1, 1) ||
				substr(chars, ((second >> 12) & 63)+1, 1) ||
				substr(chars, ((second >> 18) & 63)+1, 1) ||
				substr(chars, ((second >> 24) & 63)+1, 1) ||
				substr(chars, ((second >> 30) & 63)+1, 1) ||
				substr(chars, ((second >> 36) & 63)+1, 1) ||
				substr(chars, ((second >> 42) & 63)+1, 1)) as uuid
		FROM (
				SELECT 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/' as chars,
            random() as first,
            random() as second
		);
```