Struct ExecResult 

pub struct ExecResult { /* private fields */ }

Execution result for DML operations (INSERT, UPDATE, DELETE)

This result type tracks the number of rows affected and the last insert ID for auto-increment columns.

OPTIMIZATION: Uses static empty values for columns and empty_row to avoid allocations on every DML operation (was causing 40K+ allocations per benchmark).

Implementations

impl ExecResult

pub fn new(rows_affected: i64, last_insert_id: i64) -> Self

Create a new execution result

pub fn empty() -> Self

Create an empty result (for DDL statements)

pub fn with_rows_affected(rows_affected: i64) -> Self

Create a result with just rows affected

pub fn with_last_insert_id(rows_affected: i64, last_insert_id: i64) -> Self

Create a result with rows affected and last insert ID

Trait Implementations

impl QueryResult for ExecResult

fn columns(&self) -> &[String]

Returns the column names in the result

fn next(&mut self) -> bool

Moves the cursor to the next row

fn scan(&self, _dest: &mut [Value]) -> Result<()>

Scans the current row into the provided values

fn row(&self) -> &Row

Returns the current row directly without copying

fn close(&mut self) -> Result<()>

Closes the result set and releases resources

fn rows_affected(&self) -> i64

Returns the number of rows affected by an INSERT, UPDATE, or DELETE

fn last_insert_id(&self) -> i64

Returns the last inserted ID for an INSERT operation

fn with_aliases( self: Box<Self>, _aliases: FxHashMap<String, String>, ) -> Box<dyn QueryResult>

Sets column aliases for this result

fn columns_arc(&self) -> Option<CompactArc<Vec<String>>>

Returns column names as Arc for zero-copy sharing

fn take_row(&mut self) -> Row

Takes ownership of the current row (avoids clone)

fn try_into_arc_rows(&mut self) -> Option<CompactArc<Vec<Row>>>

Try to extract all rows as CompactArc<Vec<Row>> for zero-copy joins

fn estimated_count(&self) -> Option<usize>

Returns an estimate of the total number of rows in the result.

fn supports_typed_batches(&self) -> bool

Whether the result can yield decoded typed column batches without constructing a row/value object for every result record.

fn typed_batch_fallback_reason(&self) -> Option<TypedBatchFallbackReason>

If supports_typed_batches() is false, return the best semantic reason.

fn next_typed_batch(&mut self) -> Result<Option<TypedColumnBatch>, Error>

Advance to the next typed column batch.

fn last_error(&mut self) -> Option<Error>

Returns a pending error from the last next() call, if any.