Struct Block 

pub struct Block { /* private fields */ }

Decoded Native block.

Value releases its memory with allocator used during decoding.

Implementations

impl Block

pub fn n_rows(&self) -> usize

pub fn n_columns(&self) -> usize

pub fn column_name(&self, i: usize) -> Option<&[u8]>

Returns column name bytes without UTF-8 validation.

pub fn column_type(&self, i: usize) -> Option<TypeRef<'_>>

pub fn column(&self, i: usize) -> Option<Column<'_>>

pub fn validate(&self) -> Result<()>

Validates structural relationships within every column.

Validation checks array offset order and LowCardinality dictionary indexes. Call this method before using offsets or keys from untrusted data as indexes.

Runtime cost is proportional to row count.

pub fn is_overflows(&self) -> bool

Returns server flag marking a block truncated by max_rows_to_group_by with group_by_overflow_mode = 'any'.

pub fn bucket_num(&self) -> i32

Returns two-level aggregation bucket, or -1 when not applicable.

Trait Implementations

impl Drop for Block

fn drop(&mut self)

Executes the destructor for this type.

fn pin_drop(self: Pin<&mut Self>)

🔬This is a nightly-only experimental API. (pin_ergonomics)

Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned.

impl Send for Block