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.

`Functions`

This reference topic applies to FQL v4. Go to this page for the latest FQL v10 reference topics.

Functions( [database] )

functions( [database] )

Functions( )
ScopedFunctions( database )

Functions( [database] )

Functions( [database] )

Functions( [database] )

Description

The Functions function when executed with Paginate returns an array of References for all user-defined functions in the database specified. If a child database is not specified, the returned function references all belong to the current database.

When a child database is specified, an admin key must be used to call Functions (server or client keys, or ABAC tokens, cannot be used to access a child database).

Also, Go does not support optional function parameters, nor function overloading. To specify a child database using the Go driver, call the ScopedFunctions function instead of Functions.

Parameters

Parameter Type Definition and Requirements

Parameter	Type	Definition and Requirements
`database`	Reference	Optional - A Reference to a child database. If not specified, the current database is used. A Reference to a child database. Optional - A Reference to a child database. If not specified, the current database is used. Optional - A Reference to a child database. If not specified, the current database is used. Optional - A Reference to a child database. If not specified, the current database is used. Optional - A Reference to a child database. If not specified, the current database is used. Optional - A Reference to a child database. If not specified, the current database is used.

database

Reference

Optional - A Reference to a child database. If not specified, the current database is used.

A Reference to a child database.

Optional - A Reference to a child database. If not specified, the current database is used.

Returns

A Set Reference for the available user-defined functions in the specified child database (or the current database if database is not specified).

Examples

The following query lists the References for any user-defined functions (up to the pagination limit) in the current database:

client.query(
  q.Paginate(q.Functions())
)
.then((ret) => console.log(ret))
.catch((err) => console.error(
  'Error: [%s] %s: %s',
  err.name,
  err.message,
  err.errors()[0].description,
))

{
  data: [
    Function("increment"),
    Function("double"),
    Function("submit_order")
  ]
}

result = client.query(
  q.paginate(q.functions())
)
print(result)

{'data': [Ref(id=increment, collection=Ref(id=functions)), Ref(id=double, collection=Ref(id=functions)), Ref(id=submit_order, collection=Ref(id=functions))]}

result, err := client.Query(
	f.Paginate(f.Functions()))

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

map[data:[{increment 0xc0000b71d0 0xc0000b71d0 <nil>} {double 0xc0000b72c0 0xc0000b72c0 <nil>} {submit_order 0xc0000b73b0 0xc0000b73b0 <nil>}]]

try
{
    Value result = await client.Query(
        Paginate(Functions())
    );
    Console.WriteLine(result);
}
catch (Exception e)
{
    Console.WriteLine($"ERROR: {e.Message}");
}

ObjectV(data: Arr(RefV(id = "increment", collection = RefV(id = "functions")), RefV(id = "double", collection = RefV(id = "functions")), RefV(id = "submit_order", collection = RefV(id = "functions"))))

System.out.println(
    client.query(
        Paginate(Functions())
    ).get());

{data: [ref(id = "increment", collection = ref(id = "functions")), ref(id = "double", collection = ref(id = "functions")), ref(id = "submit_order", collection = ref(id = "functions"))]}

Paginate(Functions())

{
  data: [
    Function("increment"),
    Function("double"),
    Function("submit_order")
  ]
}

Query metrics:

bytesIn: 31
bytesOut: 230
computeOps: 1
readOps: 8
writeOps: 0
readBytes: 334
writeBytes: 0
queryTime: 11ms
retries: 0

The following query lists the References for any user-defined functions (up to the pagination limit) in a child database named "child_db":

client.query(
  q.Paginate(q.Functions(q.Database('child_db')))
)
.then((ret) => console.log(ret))
.catch((err) => console.error(
  'Error: [%s] %s: %s',
  err.name,
  err.message,
  err.errors()[0].description,
))

{ data: [] }

result = client.query(
  q.paginate(q.functions(q.database("child_db")))
)
print(result)

{'data': []}

result, err := client.Query(
	f.Paginate(f.ScopedFunctions(f.Database("child_db"))))

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

map[data:[]]

try
{
    Value result = await client.Query(
        Paginate(Functions(Database("child_db")))
    );
    Console.WriteLine(result);
}
catch (Exception e)
{
    Console.WriteLine($"ERROR: {e.Message}");
}

ObjectV(data: Arr())

System.out.println(
    client.query(
        Paginate(Functions(Database("child_db")))
    ).get());

{data: []}

Paginate(Functions(Database('child_db')))

{ data: [] }

Query metrics:

bytesIn: 50
bytesOut: 24
computeOps: 1
readOps: 8
writeOps: 0
readBytes: 363
writeBytes: 0
queryTime: 17ms
retries: 0

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