Struct GroupConcatAccumulator 

pub struct GroupConcatAccumulator { /* private fields */ }

Accumulator for GROUP_CONCAT.

Implementations

impl GroupConcatAccumulator

pub fn new(separator: String) -> Self

Create a new GROUP_CONCAT accumulator with the given separator.

Trait Implementations

impl Accumulator for GroupConcatAccumulator

fn update(&mut self, value: Option<SqlValue>) -> Result<()>

Update the accumulator with a new value (None for COUNT(*) rows).

fn finalize(&self) -> Result<SqlValue>

Finalize the accumulator and return the resulting SqlValue.

fn clone_box(&self) -> Box<dyn Accumulator>

Clone the accumulator as a trait object.

impl Clone for GroupConcatAccumulator

fn clone(&self) -> GroupConcatAccumulator

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GroupConcatAccumulator

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

Formats the value using the given formatter.