Enum mz_persist_types::stats::JsonStats

pub enum JsonStats {
    None,
    Mixed,
    JsonNulls,
    Bools(PrimitiveStats<bool>),
    Strings(PrimitiveStats<String>),
    Numerics(PrimitiveStats<Vec<u8>>),
    Lists,
    Maps(BTreeMap<String, JsonMapElementStats>),
}

Variants

None

A sentinel that indicates there were no elements.

Mixed

There were elements from more than one category of: bools, strings, numerics, lists, maps.

JsonNulls

A sentinel that indicates all elements were Datum::JsonNulls.

Bools(PrimitiveStats<bool>)

The min and max bools, or None if there were none.

Strings(PrimitiveStats<String>)

The min and max strings, or None if there were none.

Numerics(PrimitiveStats<Vec<u8>>)

The min and max numerics, or None if there were none. Since we don’t have a decimal type here yet, this is stored in serialized form.

Lists

A sentinel that indicates all elements were Datum::Lists.

TODO: We could also do something for list indexes analogous to what we do for map keys, but it initially seems much less likely that a user would expect that to work with pushdown, so don’t bother keeping the stats until someone asks for it.

Maps(BTreeMap<String, JsonMapElementStats>)

Recursive statistics about the set of keys present in any maps/objects in the column, or None if there were no maps/objects.

Implementations

impl JsonStats

pub fn debug_json(&self) -> Value

Trait Implementations

impl Debug for JsonStats

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

Formats the value using the given formatter.

impl Default for JsonStats

fn default() -> Self

Returns the “default value” for a type.

impl RustType<ProtoJsonStats> for JsonStats

fn into_proto(&self) -> ProtoJsonStats

Convert a Self into a Proto value.

fn from_proto(proto: ProtoJsonStats) -> Result<Self, TryFromProtoError>

Consume and convert a Proto back into a Self value.