Method valueAt

pkg/sql/sem/tree/window_funcs.go:528–534

valueAt returns the first argument of the window function at the row idx.

(ctx context.Context, idx int)

// valueAt returns the first argument of the window function at the row idx.
func (wfr *WindowFrameRun) valueAt(ctx context.Context, idx int) (Datum, error) {
	row, err := wfr.Rows.GetRow(ctx, idx)
	if err != nil {
		return nil, err
	}
	return row.GetDatum(wfr.OrdColIdx)
}

// RangeModeWithOffsets returns whether the frame is in RANGE mode with at least
// one of the bounds containing an offset.