fix(transfer): stop duplicating the database name in start confirm

apps/desktop/src/components/transfer/DataTransferDialog.vue

@@ -27,7 +27,7 @@ import type { TransferTask, TransferTaskConfig } from "@/types/database";
 import { isSchemaAware, supportsTransfer } from "@/lib/database/databaseCapabilities";
 import { transferDatabaseTypeForConnection } from "@/lib/database/jdbcDialect";
 import { isDorisFamilyCatalogCapable } from "@/lib/database/databaseFeatureSupport";
-import { decodeTransferDatabaseOption, encodeTransferDatabaseOptions, isSameTransferDatabase, isTransferDatabaseSelected, normalizeTransferCatalog } from "@/lib/database/dataTransferSelection";
+import { decodeTransferDatabaseOption, encodeTransferDatabaseOptions, formatTransferEndpointLabel, isSameTransferDatabase, isTransferDatabaseSelected, normalizeTransferCatalog } from "@/lib/database/dataTransferSelection";
 import { formatDatabaseLabel } from "@/lib/database/defaultDatabase";
 import { databaseOptionsForConnection, fetchCatalogNamespaceOptions, fetchNamespaceOptionsForConnection, namespaceOptionsAreSchemas } from "@/composables/useDatabaseOptions";
 import { useExportTracker } from "@/composables/useExportTracker";
@@ -1046,8 +1046,8 @@ function transferStrategyLabel(request: api.TransferRequest): string {
 const confirmationSummary = computed(() => {
   const request = confirmationRequest.value;
   if (!request) return "";
-  const source = `${getConnectionName(request.sourceConnectionId)}.${request.sourceDatabase}.${request.sourceSchema}`;
-  const target = `${getConnectionName(request.targetConnectionId)}.${request.targetDatabase}.${request.targetSchema}`;
+  const source = formatTransferEndpointLabel(getConnectionName(request.sourceConnectionId), request.sourceDatabase, request.sourceSchema, request.sourceCatalog);
+  const target = formatTransferEndpointLabel(getConnectionName(request.targetConnectionId), request.targetDatabase, request.targetSchema, request.targetCatalog);
   const count = request.tables.length + request.objects.reduce((total, selection) => total + selection.names.length, 0);
   return t("transfer.startConfirmMessage", { source, target, count });
 });

apps/desktop/src/lib/__tests__/database/dataTransferSelection.spec.ts

@@ -1,5 +1,5 @@
 import { describe, expect, it } from "vitest";
-import { decodeTransferDatabaseOption, encodeTransferDatabaseOptions, isSameTransferDatabase, isTransferDatabaseSelected, normalizeTransferCatalog, type TransferDatabaseSelection } from "@/lib/database/dataTransferSelection";
+import { decodeTransferDatabaseOption, encodeTransferDatabaseOptions, formatTransferEndpointLabel, isSameTransferDatabase, isTransferDatabaseSelected, normalizeTransferCatalog, type TransferDatabaseSelection } from "@/lib/database/dataTransferSelection";
 import { TREE_SCHEMA_DEFAULT_DATABASE_SELECT_VALUE } from "@/lib/database/defaultDatabase";
 import type { CatalogInfo } from "@/types/database";
 
@@ -57,4 +57,16 @@ describe("data transfer database selection", () => {
   it("compares connection and database fields without concatenation collisions", () => {
     expect(isSameTransferDatabase(selection({ connectionId: "ab", database: "c" }), selection({ connectionId: "a", database: "bc" }))).toBe(false);
   });
+
+  it("omits schema when it repeats the database name", () => {
+    expect(formatTransferEndpointLabel("127.0.0.1", "russia_b2b_catalog", "russia_b2b_catalog")).toBe("127.0.0.1.russia_b2b_catalog");
+    expect(formatTransferEndpointLabel("192.168.1.183", "russia_b2b_catalog", "russia_b2b_catalog")).toBe("192.168.1.183.russia_b2b_catalog");
+  });
+
+  it("keeps a distinct schema and optional catalog in the confirmation label", () => {
+    expect(formatTransferEndpointLabel("warehouse", "app", "public")).toBe("warehouse.app.public");
+    expect(formatTransferEndpointLabel("oracle", "", "HR")).toBe("oracle.HR");
+    expect(formatTransferEndpointLabel("doris", "sales", "sales", "iceberg")).toBe("doris.iceberg.sales");
+    expect(formatTransferEndpointLabel("prod", "app", "public", "hive")).toBe("prod.hive.app.public");
+  });
 });

apps/desktop/src/lib/database/dataTransferSelection.ts

@@ -31,3 +31,17 @@ export function normalizeTransferCatalog(catalog: string, catalogs: readonly Cat
 export function isSameTransferDatabase(source: TransferDatabaseSelection, target: TransferDatabaseSelection): boolean {
   return source.connectionId === target.connectionId && source.database === target.database && normalizeTransferCatalog(source.catalog, source.catalogs) === normalizeTransferCatalog(target.catalog, target.catalogs);
 }
+
+/** Confirmation label: skip schema when it equals the database name (MySQL). */
+export function formatTransferEndpointLabel(connectionName: string, database: string, schema: string, catalog?: string): string {
+  const parts: string[] = [];
+  const name = connectionName.trim();
+  if (name) parts.push(name);
+  const catalogName = catalog?.trim() ?? "";
+  if (catalogName) parts.push(catalogName);
+  const databaseName = database.trim();
+  if (databaseName) parts.push(databaseName);
+  const schemaName = schema.trim();
+  if (schemaName && schemaName !== databaseName) parts.push(schemaName);
+  return parts.join(".");
+}