Struct QuerySummary 

pub struct QuerySummary { /* private fields */ }

Parsed representation of the X-ClickHouse-Summary HTTP response header.

Provides typed getters for known fields and a generic get fallback for forward-compatibility with future ClickHouse versions.

All getters return Option<u64>: None if the field is absent or cannot be parsed. This ensures deserialization never fails, even if ClickHouse renames, removes, or adds fields.

Note: the summary values may be incomplete unless the query was executed with wait_end_of_query=1, because ClickHouse sends this header before the response body and the values reflect progress at that point.

Implementations

impl QuerySummary

pub fn get(&self, key: &str) -> Option<&str>

Returns the raw string value for the given key, if present.

Use this to access fields that are not yet covered by typed getters, e.g. fields added in newer ClickHouse versions.

pub fn read_rows(&self) -> Option<u64>

pub fn read_bytes(&self) -> Option<u64>

pub fn written_rows(&self) -> Option<u64>

pub fn written_bytes(&self) -> Option<u64>

pub fn total_rows_to_read(&self) -> Option<u64>

pub fn result_rows(&self) -> Option<u64>

pub fn result_bytes(&self) -> Option<u64>

pub fn elapsed_ns(&self) -> Option<u64>

pub fn memory_usage(&self) -> Option<u64>

Trait Implementations

impl Clone for QuerySummary

fn clone(&self) -> QuerySummary

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for QuerySummary

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

Formats the value using the given formatter.