FQL v4 will be decommissioned on June 30, 2025. Ensure that you complete your migration from FQL v4 to FQL v10 by that date.

Fauna accounts created after August 21, 2024 must use FQL v10. These accounts will not be able to run FQL v4 queries or access the v4 Dashboard.

For more details, see the v4 EOL announcement and migration guide. Contact support@fauna.com with any questions.

Create a child database

Reading or writing database documents requires an admin key.

Problem

You need to create a child database.

Solution

Use the CreateDatabase function:

adminClient.query(
  q.CreateDatabase({ name: 'annuvin' })
)
.then((ret) => console.log(ret))
.catch((err) => console.error(
  'Error: [%s] %s: %s',
  err.name,
  err.message,
  err.errors()[0].description,
))

{
  ref: Database("annuvin"),
  ts: 1622573508720000,
  name: 'annuvin',
  global_id: 'yoiji573cydyy'
}

result = adminClient.query(
  q.create_database({"name": "annuvin"})
)
print(result)

{'ref': Ref(id=annuvin, collection=Ref(id=databases)), 'ts': 1622573511610000, 'name': 'annuvin', 'global_id': 'yoijihdqgydyy'}

result, err := adminClient.Query(
	f.CreateDatabase(f.Obj{"name": "annuvin"}))

if err != nil {
	fmt.Fprintln(os.Stderr, err)
} else {
	fmt.Println(result)
}

map[global_id:yoiji3uwcybyy name:annuvin ref:{annuvin 0xc0001804b0 0xc0001804b0 <nil>} ts:1622573470750000]

try
{
    Value result = await client.Query(
        CreateDatabase(Obj("name", "annuvin"))
    );
    Console.WriteLine(result);
}
catch (Exception e)
{
    Console.WriteLine($"ERROR: {e.Message}");
}

ObjectV(ref: RefV(id = "annuvin", collection = RefV(id = "databases")),ts: LongV(1622573448030000),name: StringV(annuvin),global_id: StringV(yoijia8e1ybyy))

System.out.println(
        adminClient.query(
            CreateDatabase(Obj("name", Value("annuvin")))
        ).get());

{ref: ref(id = "annuvin", collection = ref(id = "databases")), ts: 1622573481000000, name: "annuvin", global_id: "yoiji48irybyy"}

CreateDatabase({ name: 'annuvin' })

{
  ref: Database("annuvin"),
  ts: 1624310575420000,
  name: 'annuvin',
  global_id: 'yoat8nnggybyy'
}

Query metrics:

bytesIn: 49
bytesOut: 154
computeOps: 1
readOps: 0
writeOps: 1
readBytes: 20
writeBytes: 473
queryTime: 40ms
retries: 0

Discussion

It is not possible to create parent or peer databases with the CreateDatabase function; you can only create a child database in the current database.

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