Struct TableMetadataCacheUsage 

pub struct TableMetadataCacheUsage {
    pub explanation: Option<String>,
    pub pruning_stats: Option<PruningStats>,
    pub staleness: Option<Duration>,
    pub table_reference: Option<TableReference>,
    pub table_type: Option<String>,
    pub unused_reason: Option<String>,
}

Table level detail on the usage of metadata caching. Only set for Metadata caching eligible tables referenced in the query.

This type is not used in any activity, and only used as part of another schema.

Fields

explanation: Option<String>

Free form human-readable reason metadata caching was unused for the job.

pruning_stats: Option<PruningStats>

The column metadata index pruning statistics.

staleness: Option<Duration>

Duration since last refresh as of this job for managed tables (indicates metadata cache staleness as seen by this job).

table_reference: Option<TableReference>

Metadata caching eligible table referenced in the query.

table_type: Option<String>

Table type.

unused_reason: Option<String>

Reason for not using metadata caching for the table.

Trait Implementations

impl Clone for TableMetadataCacheUsage

fn clone(&self) -> TableMetadataCacheUsage

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TableMetadataCacheUsage

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

Formats the value using the given formatter.

impl Default for TableMetadataCacheUsage

fn default() -> TableMetadataCacheUsage

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for TableMetadataCacheUsage

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for TableMetadataCacheUsage

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Part for TableMetadataCacheUsage