Struct QueryResult 

pub struct QueryResult { /* private fields */ }

Result of a query execution. Owns the row offset metadata.

Uses flat column offset storage: all rows’ (arena_offset, length) pairs are stored contiguously in all_col_offsets. Row N starts at index N * num_cols. No separate row_starts Vec needed.

Example

let result = conn.query("SELECT 1 as n", 0, &[], &mut arena).await?;
for i in 0..result.len() {
    let row = result.row(i, &arena);
    // Access columns by index
}

Implementations

impl QueryResult

pub fn from_parts( all_col_offsets: Vec<(usize, i32)>, num_cols: usize, columns: Arc<[ColumnDesc]>, affected_rows: u64, ) -> Self

Construct a QueryResult from its constituent parts.

Used by bsql-core’s streaming layer to assemble per-chunk results.

pub fn len(&self) -> usize

Number of rows in the result.

pub fn is_empty(&self) -> bool

Whether the result set is empty.

pub fn affected_rows(&self) -> u64

Number of affected rows (for INSERT/UPDATE/DELETE).

pub fn columns(&self) -> &[ColumnDesc]

Column descriptors.

pub fn row<'a>(&'a self, idx: usize, arena: &'a Arena) -> Row<'a>

Get a row by index. The returned Row borrows from the arena.

pub fn take_col_offsets(&mut self) -> Vec<(usize, i32)>

Take the col_offsets vec out of this result, leaving it empty.

Used by QueryStream to reclaim and reuse the allocation between chunks instead of allocating a new Vec per chunk.

pub fn rows<'a>(&'a self, arena: &'a Arena) -> impl Iterator<Item = Row<'a>>

Iterate over rows.