Trait RowExpander 

pub trait RowExpander: Send + Sync {
    // Required methods
    fn name(&self) -> &str;
    fn description(&self) -> &str;
    fn expand(
        &self,
        value: &DataValue,
        args: &[DataValue],
    ) -> Result<ExpansionResult>;
}

Trait for row expander implementations

Row expanders are special expressions that cause a single input row to be multiplied into multiple output rows.

Required Methods

fn name(&self) -> &str

Name of the expander (e.g., “UNNEST”)

fn description(&self) -> &str

Description of what this expander does

fn expand( &self, value: &DataValue, args: &[DataValue], ) -> Result<ExpansionResult>

Expand a single value into multiple values

Arguments

• value - The input value to expand (e.g., delimited string)
• args - Additional arguments (e.g., delimiter)

Returns

An ExpansionResult containing the array of values for output rows

Implementors

impl RowExpander for UnnestExpander