Enum AdHocResultFormat 

pub enum AdHocResultFormat {
    Text,
    Json,
    Parquet,
    ArrowIpc,
    Hash,
}

URL-encoded format argument to the /query endpoint.

Variants

Text

Serialize results as a human-readable text table.

Json

Serialize results as new-line delimited JSON records.

Deprecation Notice

This format is deprecated and will be removed in the future. Users are encouraged to use the arrow_ipc format instead, See https://github.com/feldera/feldera/issues/4219 for more details.

Parquet

Download results in a parquet file.

ArrowIpc

Stream data in the arrow IPC format.

Hash

Returns a hash of the results instead of the actual data.

The output in this case is a single string/line containing a SHA256 hash (or a JSON formatted error message in case the query failed to execute).

This is useful for verifying the integrity of the data without transferring the entire dataset.

Note that supplying a query with this format will implicitly add an ORDER BY clause for all fields of the result to the query to ensure consistent ordering of results.

e.g., a query like select * from materialized_view will be rewritten as select * from materialized_view order by col1, col2, ..., colN

Trait Implementations

impl Clone for AdHocResultFormat

fn clone(&self) -> AdHocResultFormat

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for AdHocResultFormat

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for AdHocResultFormat

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for AdHocResultFormat

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for AdHocResultFormat

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for AdHocResultFormat

fn eq(&self, other: &AdHocResultFormat) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for AdHocResultFormat

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl<'__s> ToSchema<'__s> for AdHocResultFormat

fn schema() -> (&'__s str, RefOr<Schema>)

Return a tuple of name and schema or reference to a schema that can be referenced by the name or inlined directly to responses, request bodies or parameters.

fn aliases() -> Vec<(&'__s str, Schema)>

Optional set of alias schemas for the ToSchema::schema.

impl Copy for AdHocResultFormat

impl StructuralPartialEq for AdHocResultFormat