Enum ColumnArray 

pub enum ColumnArray {
    Int64(Arc<Vec<i64>>, Option<Arc<Vec<bool>>>),
    Int32(Arc<Vec<i32>>, Option<Arc<Vec<bool>>>),
    Float64(Arc<Vec<f64>>, Option<Arc<Vec<bool>>>),
    Float32(Arc<Vec<f32>>, Option<Arc<Vec<bool>>>),
    String(Arc<Vec<Arc<str>>>, Option<Arc<Vec<bool>>>),
    FixedString(Arc<Vec<Arc<str>>>, Option<Arc<Vec<bool>>>),
    Date(Arc<Vec<i32>>, Option<Arc<Vec<bool>>>),
    Timestamp(Arc<Vec<i64>>, Option<Arc<Vec<bool>>>),
    Boolean(Arc<Vec<u8>>, Option<Arc<Vec<bool>>>),
    Mixed(Arc<Vec<SqlValue>>),
}

Type-specialized column storage

Each variant stores values in a native array for maximum SIMD efficiency. NULL values are tracked separately in a boolean bitmap.

Zero-Copy Design

All column data is wrapped in Arc<Vec<T>>, enabling:

• Zero-copy sharing with storage layer
• O(1) clone operations for query execution
• Direct SIMD access via as_slice() on Arc contents

Variants

Int64(Arc<Vec<i64>>, Option<Arc<Vec<bool>>>)

64-bit integers (INT, BIGINT)

Int32(Arc<Vec<i32>>, Option<Arc<Vec<bool>>>)

32-bit integers (INT, SMALLINT)

Float64(Arc<Vec<f64>>, Option<Arc<Vec<bool>>>)

64-bit floats (DOUBLE PRECISION, FLOAT)

Float32(Arc<Vec<f32>>, Option<Arc<Vec<bool>>>)

32-bit floats (REAL)

String(Arc<Vec<Arc<str>>>, Option<Arc<Vec<bool>>>)

Variable-length strings (VARCHAR, TEXT)

FixedString(Arc<Vec<Arc<str>>>, Option<Arc<Vec<bool>>>)

Fixed-length strings (CHAR)

Date(Arc<Vec<i32>>, Option<Arc<Vec<bool>>>)

Dates (stored as i32 days since epoch)

Timestamp(Arc<Vec<i64>>, Option<Arc<Vec<bool>>>)

Timestamps (stored as i64 microseconds since epoch)

Boolean(Arc<Vec<u8>>, Option<Arc<Vec<bool>>>)

Booleans (stored as bytes for SIMD compatibility)

Mixed(Arc<Vec<SqlValue>>)

Mixed-type column (fallback for complex types)

Implementations

impl ColumnArray

pub fn len(&self) -> usize

Get the number of values in this column

pub fn is_empty(&self) -> bool

Check if column is empty

pub fn get_value(&self, index: usize) -> Result<SqlValue, ExecutorError>

Get a value at the specified index as SqlValue

pub fn data_type(&self) -> DataType

Get the data type of this column

pub fn as_i64(&self) -> Option<(&[i64], Option<&[bool]>)>

Get raw i64 slice (for SIMD operations)

pub fn as_f64(&self) -> Option<(&[f64], Option<&[bool]>)>

Get raw f64 slice (for SIMD operations)

Trait Implementations

impl Clone for ColumnArray

fn clone(&self) -> ColumnArray

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ColumnArray

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

Formats the value using the given formatter.