`And`

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

And(value_1, value_2, ...)

and_(value_1, value_2, ...)

And(value_1, value_2, ...)

And(value_1, value_2, ...)

And(value_1, value_2, ...)

And(value_1, value_2, ...)

Description

The And function computes the conjunction of a list of boolean values, returning true if all elements are "true", and false otherwise.

Prior to version 3.0.0, all items in the value list were evaluated. With version 3.0.0, evaluation is short-circuited when a false value is encountered. For example, a collection is no longer created with this query:

And(false, CreateCollection({ name: "test" }))

And does not support parameters that include objects, arrays, pages, sets, or expressions. The similar All function supports arrays, pages, and sets.

Parameters

Parameter Type Definition and Requirements

Parameter	Type	Definition and Requirements
`value`	Boolean	One or more Boolean values.

value

Boolean

One or more Boolean values.

Returns

A Boolean value.

Examples

The following query returns false because the last argument is "false":

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

false

result = client.query(
    q.and_(True, True, False)
)
print(result)

False

result, err := client.Query(
	f.And(true, true, false))

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

false

try
{
    Value result = await client.Query(
        And(true, true, false)
    );
    Console.WriteLine(result);
}
catch (Exception e)
{
    Console.WriteLine($"ERROR: {e.Message}");
}

BooleanV(False)

System.out.println(
    client.query(
        And(Value(true), Value(true), Value(false))
    ).get());

false

And(true, true, false)

false

Query metrics:

bytesIn: 25
bytesOut: 18
computeOps: 1
readOps: 0
writeOps: 0
readBytes: 0
writeBytes: 0
queryTime: 4ms
retries: 0