fix(gaussdb): support M-mode type metadata

apps/desktop/src/stores/connectionStore.ts

@@ -73,6 +73,7 @@ import { shouldMarkDisconnected } from "@/lib/connection/connectionHealth";
 import { connectionAttemptOriginalErrorMessage, connectionAttemptTimeoutMessage, connectionAttemptTimeoutMs } from "@/lib/connection/connectionAttemptTimeout";
 import { loadTimeoutInheritanceBackup, saveTimeoutInheritanceBackup } from "@/lib/connection/timeoutInheritanceBackup";
 import { migrateSqlServerLegacyCompatibilityConfig, requiresSqlServerLegacyCompatibilityComponent, SQLSERVER_LEGACY_COMPATIBILITY_DRIVER_KEY } from "@/lib/connection/sqlServerLegacyCompatibility";
+import { gaussdbMTypeDisplayName } from "@/lib/table/postgresDataTypeHelp";
 import { deleteTabResultSnapshotsForOwner } from "@/lib/tabs/tabResultCache";
 import { connectionUsesVisibleSchemaFilter, filterDatabaseNamesForConnection, filterSchemaNamesForConnection, filterVisibleDatabaseNames, normalizeVisibleDatabaseSelection } from "@/lib/database/visibleDatabases";
 import {
@@ -5066,11 +5067,13 @@ export const useConnectionStore = defineStore("connection", () => {
       const columns = await api.getColumns(connectionId, database, querySchema, table, catalog);
       const targetNode = treeNodeLoadTarget(load);
       if (!targetNode) return;
+      const connConfig = getConfig(connectionId);
+      const isGaussdbM = effectiveDatabaseTypeForConnection(connConfig) === "gaussdb" && connConfig?.driver_profile?.toLowerCase() === "gaussdb-m";
       setChildren(
         targetNode,
         columns.map((col) => ({
           id: `${parentId}:${col.name}`,
-          label: `${col.name} (${col.data_type})`,
+          label: `${col.name} (${isGaussdbM ? gaussdbMTypeDisplayName(col.data_type) : col.data_type})`,
           type: "column" as const,
           connectionId,
           database,