perf: 优化SQL工作台大结果渲染

- 提供一百到一万行返回档位

- 使用虚拟表格降低大结果集页面开销

easyflow-ui-admin/app/src/views/dataspace/DataspaceWorkspace.vue

@@ -117,7 +117,6 @@ onMounted(() => {
   width: 100%;
   height: 100%;
   min-height: 0;
-  overflow: hidden;
 }
 
 @media (max-width: 900px) {

easyflow-ui-admin/app/src/views/dataspace/components/SqlWorkbenchPanel.test.ts

@@ -22,11 +22,32 @@ vi.mock('#/api/dataspace', () => ({
   queryDataspace: apiMocks.query,
 }));
 
+vi.mock('element-plus/es/components/table-v2/style/css.mjs', () => ({}));
+
 const mountWorkbench = () =>
   shallowMount(SqlWorkbenchPanel, {
     global: {
       stubs: {
+        ElOption: {
+          name: 'ElOption',
+          props: ['label', 'value'],
+          template: '<div></div>',
+        },
+        ElSelect: {
+          name: 'ElSelect',
+          props: ['modelValue'],
+          template: '<div><slot /></div>',
+        },
         ElTooltip: { template: '<div><slot /></div>' },
+        ElTableV2: {
+          name: 'ElTableV2',
+          props: ['columns', 'data', 'rowKey'],
+          template: '<div class="table-v2-test-stub"></div>',
+        },
+        ElAutoResizer: {
+          name: 'ElAutoResizer',
+          template: '<div><slot :height="320" :width="960" /></div>',
+        },
       },
     },
   });
@@ -190,6 +211,112 @@ describe('sql workbench panel', () => {
     ]);
   });
 
+  it('offers row limits through 10000 and sends the selected value', async () => {
+    const rows = Array.from({ length: 10_000 }, (_, index) => [index + 1]);
+    apiMocks.query.mockResolvedValueOnce({
+      columns: [
+        { jdbcType: -5, name: 'id', nullable: false, typeName: 'BIGINT' },
+      ],
+      metrics: {
+        databaseMillis: 20,
+        firstRowMillis: 21,
+        intermediateRows: 10_000,
+        localMillis: 0,
+        planCacheHit: true,
+        planningMillis: 2,
+        queryMode: 'SINGLE_SOURCE',
+        returnedRows: 10_000,
+        totalMillis: 30,
+        truncated: false,
+      },
+      queryId: 'query-10000',
+      rows,
+    });
+    const wrapper = mountWorkbench();
+    await flushPromises();
+
+    const rowLimit = wrapper
+      .findAllComponents({ name: 'ElSelect' })
+      .find((component) => component.classes().includes('row-limit'));
+    expect(rowLimit?.props('modelValue')).toBe(500);
+    const labels = wrapper
+      .findAllComponents({ name: 'ElOption' })
+      .map((option) => option.props('label'))
+      .filter((label) => String(label).startsWith('最多'));
+    expect(labels).toEqual([
+      '最多 100 行',
+      '最多 500 行',
+      '最多 1000 行',
+      '最多 2000 行',
+      '最多 5000 行',
+      '最多 10000 行',
+    ]);
+
+    rowLimit?.vm.$emit('update:modelValue', 10_000);
+    wrapper
+      .getComponent({ name: 'CodeEditor' })
+      .vm.$emit('update:modelValue', 'SELECT id FROM outlet');
+    await flushPromises();
+    await wrapper.get('[aria-label="执行 SQL"]').trigger('click');
+    await flushPromises();
+
+    expect(apiMocks.query).toHaveBeenCalledWith(
+      expect.objectContaining({ maxRows: 10_000 }),
+    );
+    const virtualTable = wrapper.getComponent({ name: 'ElTableV2' });
+    expect(virtualTable.props('data')).toHaveLength(10_000);
+    expect(virtualTable.props('columns')).toHaveLength(2);
+    expect(virtualTable.props('rowKey')).toBe('rowKey');
+  });
+
+  it('exports every returned row independently of virtual rendering', async () => {
+    const rows = Array.from({ length: 10_000 }, (_, index) => [index + 1]);
+    apiMocks.query.mockResolvedValueOnce({
+      columns: [
+        { jdbcType: -5, name: 'id', nullable: false, typeName: 'BIGINT' },
+      ],
+      metrics: {
+        databaseMillis: 20,
+        firstRowMillis: 21,
+        intermediateRows: 10_000,
+        localMillis: 0,
+        planCacheHit: true,
+        planningMillis: 2,
+        queryMode: 'SINGLE_SOURCE',
+        returnedRows: 10_000,
+        totalMillis: 30,
+        truncated: false,
+      },
+      queryId: 'query-export',
+      rows,
+    });
+    const createObjectUrl = vi
+      .spyOn(URL, 'createObjectURL')
+      .mockReturnValue('blob:query-export');
+    const revokeObjectUrl = vi
+      .spyOn(URL, 'revokeObjectURL')
+      .mockImplementation(() => undefined);
+    const anchorClick = vi
+      .spyOn(HTMLAnchorElement.prototype, 'click')
+      .mockImplementation(() => undefined);
+    const wrapper = mountWorkbench();
+    await flushPromises();
+
+    wrapper
+      .getComponent({ name: 'CodeEditor' })
+      .vm.$emit('update:modelValue', 'SELECT id FROM outlet');
+    await flushPromises();
+    await wrapper.get('[aria-label="执行 SQL"]').trigger('click');
+    await flushPromises();
+    await wrapper.get('[aria-label="导出 CSV"]').trigger('click');
+
+    const blob = createObjectUrl.mock.calls[0]?.[0];
+    expect(blob).toBeInstanceOf(Blob);
+    expect((blob as Blob).size).toBeGreaterThan(48_000);
+    expect(anchorClick).toHaveBeenCalledOnce();
+    expect(revokeObjectUrl).toHaveBeenCalledWith('blob:query-export');
+  });
+
   it('keeps result metrics and an icon-only export action beside the tabs', async () => {
     const wrapper = mountWorkbench();
     await flushPromises();

easyflow-ui-admin/app/src/views/dataspace/components/SqlWorkbenchPanel.vue

@@ -13,6 +13,7 @@ import type {
 
 import {
   computed,
+  h,
   nextTick,
   onBeforeUnmount,
   onMounted,
@@ -48,10 +49,12 @@ import {
   ElMessage,
   ElOption,
   ElSelect,
-  ElTable,
-  ElTableColumn,
   ElTooltip,
 } from 'element-plus';
+import {
+  ElAutoResizer as TableV2AutoResizer,
+  ElTableV2,
+} from 'element-plus/es/components/table-v2/index.mjs';
 
 import {
   cancelDataspaceQuery,
@@ -65,6 +68,13 @@ import {
 import { dataspaceErrorMessage } from '../dataspace-errors';
 import { formatCalciteSql } from '../dataspace-sql';
 
+import 'element-plus/es/components/table-v2/style/css.mjs';
+
+interface VirtualResultRow {
+  cells: unknown[];
+  rowKey: number;
+}
+
 const props = defineProps<{
   initialDataspaceId?: DataspaceId;
 }>();
@@ -96,11 +106,51 @@ let resizeStartHeight = 0;
 const SPLITTER_SIZE = 8;
 const MIN_EDITOR_HEIGHT = 184;
 const MIN_OUTPUT_HEIGHT = 176;
+const MAX_ROW_OPTIONS = [100, 500, 1000, 2000, 5000, 10_000];
+const RESULT_HEADER_HEIGHT = 40;
+const RESULT_ROW_HEIGHT = 40;
 
 const hasOutput = computed(() =>
   Boolean(result.value || explainResult.value || errorMessage.value),
 );
 
+const virtualResultRows = computed<VirtualResultRow[]>(() =>
+  (result.value?.rows || []).map((cells, rowKey) => ({ cells, rowKey })),
+);
+
+const virtualResultColumns = computed(() => [
+  {
+    align: 'right' as const,
+    cellRenderer: ({ rowIndex }: { rowIndex: number }) =>
+      h('span', { class: 'result-index-cell' }, String(rowIndex + 1)),
+    dataKey: 'rowKey',
+    key: 'rowKey',
+    title: '#',
+    width: 56,
+  },
+  ...(result.value?.columns || []).map((column, index) => ({
+    cellRenderer: ({ rowData }: { rowData: VirtualResultRow }) => {
+      const value = rowData.cells[index];
+      const text =
+        value === null || value === undefined ? 'NULL' : String(value);
+      return h(
+        'span',
+        {
+          class: ['result-cell-value', { 'is-null': value == null }],
+          title: text,
+        },
+        text,
+      );
+    },
+    dataKey: `column-${index}`,
+    flexGrow: 1,
+    key: `${column.name}-${index}`,
+    minWidth: 160,
+    title: column.name,
+    width: 160,
+  })),
+]);
+
 const filteredTables = computed(() => {
   const normalized = keyword.value.trim().toLowerCase();
   if (!normalized) return detail.value?.tables || [];
@@ -462,6 +512,11 @@ function queryRequest(queryId: string) {
   };
 }
 
+/** 为虚拟结果表提供稳定的隔行底色。 */
+function resultRowClass({ rowIndex }: { rowIndex: number }) {
+  return rowIndex % 2 === 1 ? 'is-striped' : '';
+}
+
 /** 执行 Calcite SQL，并展示数据与常用消耗指标。 */
 async function execute() {
   const epoch = ++requestEpoch;
@@ -711,9 +766,9 @@ defineExpose({ loadSpaces });
           />
         </ElTooltip>
       </div>
-      <ElSelect v-model="maxRows" class="row-limit">
+      <ElSelect v-model="maxRows" class="row-limit" aria-label="最大返回行数">
         <ElOption
-          v-for="size in [100, 500, 1000, 5000]"
+          v-for="size in MAX_ROW_OPTIONS"
           :key="size"
           :label="`最多 ${size} 行`"
           :value="size"
@@ -876,19 +931,32 @@ defineExpose({ loadSpaces });
 
         <template v-else-if="result">
           <div v-if="resultTab === 'result'" class="result-panel">
-            <ElTable :data="result.rows" height="100%" stripe>
-              <ElTableColumn type="index" width="56" />
-              <ElTableColumn
-                v-for="(column, index) in result.columns"
-                :key="`${column.name}-${index}`"
-                :label="column.name"
-                min-width="160"
+            <ElEmpty
+              v-if="virtualResultRows.length === 0"
+              description="查询结果为空"
+            />
+            <div
+              v-else
+              class="virtual-result-table"
+              role="region"
+              aria-label="SQL 查询结果"
             >
-                <template #default="{ row }">
-                  {{ row[index] ?? 'NULL' }}
+              <TableV2AutoResizer>
+                <template #default="{ height, width }">
+                  <ElTableV2
+                    :columns="virtualResultColumns"
+                    :data="virtualResultRows"
+                    :header-height="RESULT_HEADER_HEIGHT"
+                    :height="height"
+                    :row-class="resultRowClass"
+                    :row-height="RESULT_ROW_HEIGHT"
+                    :width="width"
+                    fixed
+                    row-key="rowKey"
+                  />
                 </template>
-              </ElTableColumn>
-            </ElTable>
+              </TableV2AutoResizer>
+            </div>
           </div>
           <div v-else class="metrics-panel">
             <div
@@ -1577,6 +1645,7 @@ defineExpose({ loadSpaces });
   display: grid;
   grid-template-rows: minmax(0, 1fr);
   padding: 0 var(--space-3) var(--space-3);
+  overflow: hidden;
   background: hsl(var(--surface-subtle));
 }
 
@@ -1616,12 +1685,52 @@ defineExpose({ loadSpaces });
   background: hsl(var(--nav-item-hover));
 }
 
-.result-panel :deep(.el-table) {
-  font-size: 12px;
+.virtual-result-table {
+  width: 100%;
+  min-width: 0;
+  min-height: 0;
+  overflow: hidden;
 }
 
-.result-panel :deep(.el-table__cell) {
-  padding: var(--space-2) 0;
+.result-panel :deep(.el-table-v2) {
+  font-size: 12px;
+  color: hsl(var(--foreground));
+  background: hsl(var(--surface-panel));
+}
+
+.result-panel :deep(.el-table-v2__header-cell),
+.result-panel :deep(.el-table-v2__row-cell) {
+  padding: 0 var(--space-2);
+  border-right: 1px solid hsl(var(--divider-faint));
+  border-bottom: 1px solid hsl(var(--divider-faint));
+}
+
+.result-panel :deep(.el-table-v2__header-cell) {
+  color: hsl(var(--text-strong));
+  font-weight: 600;
+  background: hsl(var(--surface-subtle));
+}
+
+.result-panel :deep(.el-table-v2__row.is-striped) {
+  background: hsl(var(--surface-contrast-soft) / 48%);
+}
+
+.result-panel :deep(.el-table-v2__row:hover) {
+  background: hsl(var(--table-row-hover));
+}
+
+.result-panel :deep(.result-cell-value),
+.result-panel :deep(.result-index-cell) {
+  display: block;
+  min-width: 0;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.result-panel :deep(.result-index-cell),
+.result-panel :deep(.result-cell-value.is-null) {
+  color: hsl(var(--text-muted));
 }
 
 .metrics-panel {