AdaptTable for Base UI

Aggregation in Base UI

A summary row is not a pinned data row and not a group footer. summaryRow writes a grand total in the table footer. pinnedSummaryRows sticks host-owned totals above or below the scroll box. groupAggregates plus groupFooters close each group.

Filter the table and every total recomputes from the rows that remain — client aggregate() and a source that already computed the same numbers share one mapper shape. Extra full-width rows stay attached to a person, not to a total.

The footer, the pinned summaries and the group totals render through Base UI's own table rows. Building and reordering group levels stays on the grouping page.

Totals render as Base UI table rows; the pinned pair uses the adapter's sticky classes rather than a portal, so they stay in the scroll box.

The code

import { aggregate } from "@adapttable/core";
import { DataTable } from "@adapttable/base-ui";
import { groupingPanel } from "@adapttable/base-ui/grouping-panel";
import { pinnedSummaryRows } from "@adapttable/base-ui/pinned-summary-rows";

export function Sales({ rows, columns }) {
  const budgetSum = aggregate({ budget: "sum" }, { columns });
  return (
    <DataTable
      data={rows}
      columns={columns}
      rowKey={(row) => row.id}
      summaryRow={budgetSum}
      features={[
        groupingPanel(["team"], {
          groupAggregates: budgetSum,
          groupFooters: true,
        }),
        pinnedSummaryRows({
          top: [{ id: "team-total", name: "Team total" }],
          bottom: [{ id: "grand-total", name: "Grand total" }],
        }),
      ]}
    />
  );
}

Install

pnpm add @adapttable/base-ui @adapttable/core @base-ui/react

The same feature in the other kits

• Aggregation in Mantine — Rounded, friendly, filled controls
• Aggregation in MUI — Material elevation, uppercase actions
• Aggregation in Chakra — Soft teal, generous radius
• Aggregation in Ant Design — Compact, tinted header, crisp
• Aggregation in Radix — Radix Themes, iris accent
• Aggregation in shadcn — Monochrome, ring focus
• Aggregation in Tailwind — Unstyled — your own classes

More Base UI features

• Filtering in Base UI — Operators, an AND/OR tree, chips, and find in the same URL.
• Column management in Base UI — Show, hide, reorder, pin and resize — from a menu you did not write.
• Column groups in Base UI — Spanning headers that collapse to a stub, a kept child, or a custom cell.
• Row selection in Base UI — A set of ids that survives paging, with bulk actions over it.
• Rows in Base UI — Pin rows, merge cells, and a 3-dot menu for add and delete.
• Row reordering in Base UI — Flat, grouped and tree moves — keyboard, confirm, host writes.
• Inline cell editing in Base UI — Kit-native editors in the cell; every write goes through your handler.
• Row grouping in Base UI — Drag, keyboard and mobile grouping controls with live aggregation overrides.
• Nested tables in Base UI — A real table under a row — same engine, own columns, own keys.
• Export and print in Base UI — Browser files or cancellable server jobs — CSV, XLSX and PDF.
• Row and column virtualization in Base UI — 100k rows, 40 columns, virtualized rows and columns, sticky chrome.
• Tree data in Base UI — Nesting, chevrons, URL expansion, and host-owned tree moves.
• Mobile cards in Base UI — Every row becomes a card on phones. Automatically, with the same state.
• Pivot tables in Base UI — Rows down the side, dimensions across the top, subtotals at every level.
• Saved views in Base UI — Name an arrangement, share it as a link, manage the list in place.
• Spreadsheet formulas in Base UI — ROUND, POWER, SQRT, IF — computed columns, errors in the cell.
• Right-to-left Base UI data table — Arabic strings, a flipped axis, and a popover that opens from the right edge.
• Live updates in Base UI — Rows change while you read them. Sort and selection hold.
• Accessible Base UI data table — Arrow-key focus, a visible ring, forced-colors, and live announcements.
• AI table assistant in Base UI — Native assistant, feature-aware prompts and governed action receipts.

Reference: row-grouping, pinned-summary-rows, full-width-rows. More of this kit: AdaptTable for Base UI, or the live demo.