feat(gaussdb): make count query parallelism configurable

apps/desktop/src/components/connection/ConnectionDialog.vue

@@ -121,13 +121,16 @@ import {
 import {
   GAUSSDB_M_JDBC_DRIVER_CLASS,
   gaussdbConnectionMode,
+  gaussdbCountQueryDop,
   gaussdbIdentifierQuoteStyle,
   gaussdbTargetServerType,
   setGaussdbConnectionMode,
+  setGaussdbCountQueryDop,
   setGaussdbIdentifierQuoteStyle,
   setGaussdbTargetServerType,
   supportsGaussdbIdentifierQuoteStyle,
   type GaussdbConnectionMode,
+  type GaussdbCountQueryDop,
   type GaussdbIdentifierQuoteStyle,
   type GaussdbTargetServerType,
 } from "@/lib/database/jdbcDialect";
@@ -551,6 +554,14 @@ const gaussdbTargetServerTypeComputed = computed<GaussdbTargetServerType>({
   },
 });
 
+const gaussdbCountQueryDopComputed = computed<GaussdbCountQueryDop>({
+  get: () => gaussdbCountQueryDop(form.value),
+  set: (value) => {
+    setGaussdbCountQueryDop(form.value, value);
+    resetTestState();
+  },
+});
+
 const gaussdbHostEntries = ref<GaussdbHostEntry[]>(parseGaussdbHosts(form.value.host, form.value.port));
 
 watch(
@@ -8010,6 +8021,26 @@ function openExternalUrl(url: string) {
                     </p>
                   </div>
                 </div>
+                <div v-if="showGaussdbConnectionMode" class="grid grid-cols-4 items-start gap-4">
+                  <Label :class="connectionLabelSmallPaddedClass">{{ t("connection.gaussdbCountQueryDop") }}</Label>
+                  <div class="col-span-3 grid gap-1">
+                    <Select v-model="gaussdbCountQueryDopComputed">
+                      <SelectTrigger class="h-9">
+                        <SelectValue />
+                      </SelectTrigger>
+                      <SelectContent>
+                        <SelectItem :value="1">1 ({{ t("common.disabled") }})</SelectItem>
+                        <SelectItem :value="2">2</SelectItem>
+                        <SelectItem :value="4">4</SelectItem>
+                        <SelectItem :value="8">8</SelectItem>
+                        <SelectItem :value="16">16</SelectItem>
+                      </SelectContent>
+                    </Select>
+                    <p class="text-xs leading-5 text-muted-foreground">
+                      {{ t("connection.gaussdbCountQueryDopHint") }}
+                    </p>
+                  </div>
+                </div>
                 <div class="grid grid-cols-4 items-center gap-4">
                   <Label :class="connectionLabelSmallClass">{{ t("connection.connectTimeout") }}</Label>
                   <div class="col-span-3 grid grid-cols-2 gap-2">

apps/desktop/src/components/grid/DataGrid.vue

@@ -265,7 +265,7 @@ import { buildColumnIndexMap, columnIndexColorClass, columnIndexMetadataRequestC
 import { supportsTableStructureEditing } from "@/lib/database/databaseCapabilities";
 import { rememberDataGridConditionHistory } from "@/lib/dataGrid/dataGridConditionHistory";
 import { restoreDataGridLocalColumnFilters, serializeDataGridLocalColumnFilters } from "@/lib/dataGrid/dataGridLocalColumnFilterState";
-import { effectiveDatabaseTypeForConnection } from "@/lib/database/jdbcDialect";
+import { effectiveDatabaseTypeForConnection, gaussdbCountQueryDopHint } from "@/lib/database/jdbcDialect";
 import { mongoCollectionSupportsIndexes, supportsMongoIndexMutations } from "@/lib/mongo/mongoCapabilities";
 import { refreshLoadedMongoIndexes } from "@/lib/mongo/mongoIndexMetadata";
 import { isProtectedMongoIndex, mongoDropAllIndexesPreview, mongoDropIndexFailureCount, mongoDropIndexPreview } from "@/lib/sidebar/mongoCollectionMutation";
@@ -3286,6 +3286,7 @@ async function lastPage() {
 async function buildCurrentCountTarget(): Promise<{ sql: string; schema?: string } | undefined> {
   if (props.countSql) return { sql: props.countSql, schema: props.schema };
   if (props.tableMeta) {
+    const countHint = resolvedDatabaseType.value === "gaussdb" && props.connectionId ? gaussdbCountQueryDopHint(connectionStore.getConfig(props.connectionId)) : undefined;
     const sql = await buildDataGridCountSql({
       databaseType: props.databaseType,
       identifierQuote: connectionStore.connectionIdentifierQuote?.(props.connectionId),
@@ -3294,6 +3295,7 @@ async function buildCurrentCountTarget(): Promise<{ sql: string; schema?: string
       schema: props.tableMeta.schema,
       tableName: props.tableMeta.tableName,
       whereInput: currentWhereInput(),
+      countHint,
     });
     return {
       sql,