Struct AggResult 

pub struct AggResult {
    pub columns: Vec<ColumnSchema>,
    pub rows: Vec<Row>,
    pub deferred: Vec<(usize, Expr)>,
    pub synth_rows: Vec<Row>,
    pub synth_schema: Vec<ColumnSchema>,
}

Output of running the aggregate path. Schema describes one row per group; rows are not yet ORDER BY-sorted (caller does it).

Fields

columns: Vec<ColumnSchema>

rows: Vec<Row>

deferred: Vec<(usize, Expr)>

v7.31 (perf — PG lesson #1, post-LIMIT subquery projection): select-list items whose rewritten expr carries a subquery and is referenced by neither ORDER BY nor HAVING. Their output cells hold NULL placeholders; the caller truncates to LIMIT+OFFSET first and only then evaluates these for the surviving rows (PG runs the same shape with SubPlan loops=50 instead of loops=24000). (output_col, rewritten_expr).

synth_rows: Vec<Row>

Synthetic group rows aligned 1:1 with rows; populated only when deferred is non-empty.

synth_schema: Vec<ColumnSchema>

Schema the deferred exprs evaluate against.

Trait Implementations

impl Debug for AggResult

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

Formats the value using the given formatter.