feat(postgres): export all schemas in one SQL file

apps/desktop/src/components/export/DatabaseExportDialog.vue

@@ -59,6 +59,7 @@ const filteredTables = computed(() => {
   return tables.value.filter((name) => name.toLowerCase().includes(q));
 });
 const tableError = ref<string | null>(null);
+const POSTGRES_ALL_SCHEMAS = "__DBX_ALL_SCHEMAS__";
 
 // Options
 const includeStructure = ref(true);
@@ -70,6 +71,7 @@ const omitAutoIncrement = ref(false);
 // `AUTO_INCREMENT` stripping is a MySQL-only DDL transform (backend gates on
 // db_type == mysql, which also covers MariaDB / TiDB / OceanBase-MySQL-mode).
 const isMysqlFamily = computed(() => store.getConfig(connectionId.value)?.db_type === "mysql");
+const isPostgresAllSchemas = computed(() => store.getConfig(connectionId.value)?.db_type === "postgres" && schema.value === POSTGRES_ALL_SCHEMAS);
 
 // Export state
 const isExporting = ref(false);
@@ -115,6 +117,7 @@ const canExport = computed(() => {
   const hasContent = includeStructure.value || includeData.value || includeObjects.value;
   if (!connectionId.value || !hasContent || isExporting.value) return false;
   if (exportAllDatabases.value) return selectedDatabases.value.length > 0 && !loadingMeta.value;
+  if (isPostgresAllSchemas.value) return database.value && schemas.value.length > 0 && !loadingMeta.value;
   return (
     database.value &&
     schema.value &&
@@ -230,6 +233,13 @@ async function loadSchemas(preferredSchema = "") {
 }
 
 async function loadTables(preferredTable = "", preferredTables: string[] = []) {
+  if (schema.value === POSTGRES_ALL_SCHEMAS) {
+    tables.value = [];
+    selectedTables.value = [];
+    loadingTables.value = false;
+    tableError.value = null;
+    return;
+  }
   if (!connectionId.value || !database.value || !schema.value) return;
   loadingTables.value = true;
   tableError.value = null;
@@ -371,9 +381,9 @@ async function startExport() {
           exportId: exportId.value,
           connectionId: connectionId.value,
           database: database.value,
-          schema: schema.value,
+          schema: isPostgresAllSchemas.value ? "" : schema.value,
           filePath,
-          selectedTables: includeStructure.value || includeData.value ? buildSelectedTablesPayload(tables.value, selectedTables.value) : undefined,
+          selectedTables: !isPostgresAllSchemas.value && (includeStructure.value || includeData.value) ? buildSelectedTablesPayload(tables.value, selectedTables.value) : undefined,
           includeStructure: includeStructure.value,
           includeData: includeData.value,
           includeObjects: includeObjects.value,
@@ -737,6 +747,7 @@ watch(schema, (value) => {
   const preferredTables = pendingPrefillTables.value;
   pendingPrefillTable.value = "";
   pendingPrefillTables.value = [];
+  if (value === POSTGRES_ALL_SCHEMAS) return;
   if (value) loadTables(preferredTable, preferredTables).catch((e) => toast(String(e), 5000));
 });
 
@@ -846,12 +857,13 @@ watch(
                 <SelectValue :placeholder="t('diff.selectSchema')" />
               </SelectTrigger>
               <SelectContent position="popper" align="start">
+                <SelectItem v-if="store.getConfig(connectionId)?.db_type === 'postgres'" :value="POSTGRES_ALL_SCHEMAS">{{ t("databaseExport.allSchemas") }}</SelectItem>
                 <SelectItem v-for="s in schemas" :key="s" :value="s">{{ s }}</SelectItem>
               </SelectContent>
             </Select>
           </div>
 
-          <div v-if="!exportAllDatabases && schema" class="space-y-2">
+          <div v-if="!exportAllDatabases && schema && !isPostgresAllSchemas" class="space-y-2">
             <div class="flex items-center justify-between gap-2">
               <Label class="text-xs">{{ t("databaseExport.tableSelection") }}</Label>
               <div v-if="tables.length" class="text-[11px] text-muted-foreground">

apps/desktop/src/i18n/locales/en.ts

@@ -7708,6 +7708,7 @@ export default {
     noTables: "No tables found",
     export: "Export",
     exportAllDatabases: "Export All Databases",
+    allSchemas: "All schemas",
     exporting: "Exporting...",
     preparing: "Preparing export (reading tables and metadata)...",
     preparingObject: "Preparing: {object}",

apps/desktop/src/i18n/locales/es.ts

@@ -7290,6 +7290,7 @@ export default withEnglishFallback({
     exportSuccessWithErrors: "La exportación terminó con {count} objeto(s) fallidos: {firstError}… Consulta los comentarios -- ERROR en el archivo exportado.",
     exportAllSuccessWithErrors: "Se exportaron {count} bases de datos, pero {errorCount} objeto(s) fallaron: {firstError}… Consulta los comentarios -- ERROR en los archivos.",
     allDatabasesTask: "Todas las bases de datos ({count})",
+    allSchemas: "Todos los esquemas",
     exportError: "Error al exportar: {error}",
     exportCancelled: "Exportación cancelada",
     filterTables: "Buscar tablas...",

apps/desktop/src/i18n/locales/it.ts

@@ -7292,6 +7292,7 @@ export default withEnglishFallback({
     exportSuccessWithErrors: "Esportazione completata con {count} oggetti non riusciti: {firstError}… Dettagli nei commenti -- ERROR nel file esportato.",
     exportAllSuccessWithErrors: "Esportati {count} database, ma {errorCount} oggetti non riusciti: {firstError}… Dettagli nei commenti -- ERROR nei file.",
     allDatabasesTask: "Tutti i database ({count})",
+    allSchemas: "Tutti gli schemi",
     exportError: "Esportazione non riuscita: {error}",
     exportCancelled: "Esportazione annullata",
     runInBackground: "Esegui in background",

apps/desktop/src/i18n/locales/ja.ts

@@ -7344,6 +7344,7 @@ export default withEnglishFallback({
     exportSuccessWithErrors: "エクスポートは完了しましたが、{count} 個のオブジェクトが失敗しました：{firstError}… 詳細はエクスポートファイル内の -- ERROR コメントを確認してください。",
     exportAllSuccessWithErrors: "{count} 個のデータベースをエクスポートしましたが、{errorCount} 個のオブジェクトが失敗しました：{firstError}… 詳細はファイル内の -- ERROR コメントを確認してください。",
     allDatabasesTask: "すべてのデータベース ({count})",
+    allSchemas: "すべてのスキーマ",
     exportError: "エクスポートに失敗しました: {error}",
     exportCancelled: "エクスポートがキャンセルされました",
   },

apps/desktop/src/i18n/locales/ko.ts

@@ -7000,6 +7000,7 @@ export default withEnglishFallback({
     exportSuccessWithErrors: "내보내기가 완료되었지만 {count}개 객체가 실패했습니다: {firstError}… 자세한 내용은 내보낸 파일의 -- ERROR 주석을 참조하세요.",
     exportAllSuccessWithErrors: "데이터베이스 {count}개를 내보냈지만 {errorCount}개 객체가 실패했습니다: {firstError}… 자세한 내용은 파일의 -- ERROR 주석을 참조하세요.",
     allDatabasesTask: "모든 데이터베이스 ({count})",
+    allSchemas: "모든 스키마",
     exportError: "내보내기 실패: {error}",
     exportCancelled: "내보내기 취소됨",
     runInBackground: "백그라운드에서 실행",

apps/desktop/src/i18n/locales/pt-BR.ts

@@ -7294,6 +7294,7 @@ export default withEnglishFallback({
     exportSuccessWithErrors: "A exportação terminou com {count} objeto(s) com falha: {firstError}… Veja os comentários -- ERROR no arquivo exportado.",
     exportAllSuccessWithErrors: "{count} bancos de dados exportados, mas {errorCount} objeto(s) falharam: {firstError}… Veja os comentários -- ERROR nos arquivos.",
     allDatabasesTask: "Todos os bancos de dados ({count})",
+    allSchemas: "Todos os esquemas",
     exportError: "Falha na exportação: {error}",
     exportCancelled: "Exportação cancelada",
   },

apps/desktop/src/i18n/locales/tr.ts

@@ -7616,6 +7616,7 @@ export default withEnglishFallback({
     exportSuccessWithErrors: "Dışa aktarma tamamlandı ancak {count} nesne başarısız oldu: {firstError}… Ayrıntılar için dışa aktarılan dosyadaki -- ERROR yorumlarına bakın.",
     exportAllSuccessWithErrors: "{count} veritabanı dışa aktarıldı ancak {errorCount} nesne başarısız oldu: {firstError}… Ayrıntılar için dosyalardaki -- ERROR yorumlarına bakın.",
     allDatabasesTask: "Tüm veritabanları ({count})",
+    allSchemas: "Tüm şemalar",
     exportError: "Dışa aktarma başarısız: {error}",
     exportCancelled: "Dışa aktarma iptal edildi",
     runInBackground: "Arka planda çalıştır",

apps/desktop/src/i18n/locales/zh-CN.ts

@@ -7689,6 +7689,7 @@ export default withEnglishFallback({
     noTables: "未找到表",
     export: "导出",
     exportAllDatabases: "导出全部数据库",
+    allSchemas: "全部 Schema",
     exporting: "正在导出...",
     preparing: "正在准备导出（读取表与元数据）...",
     preparingObject: "正在准备: {object}",

apps/desktop/src/i18n/locales/zh-TW.ts

@@ -6607,6 +6607,7 @@ export default withEnglishFallback({
     exportSuccessWithErrors: "匯出完成，但有 {count} 個物件失敗：{firstError}……詳情見匯出檔案中的 -- ERROR 註解。",
     exportAllSuccessWithErrors: "已匯出 {count} 個資料庫，但有 {errorCount} 個物件失敗：{firstError}……詳情見匯出檔案中的 -- ERROR 註解。",
     allDatabasesTask: "全部資料庫（{count}）",
+    allSchemas: "全部 schema",
     exportError: "匯出失敗： {error}",
     exportCancelled: "匯出已取消",
     runInBackground: "背景執行",

apps/desktop/src/lib/export/databaseExport.ts

@@ -166,6 +166,17 @@ export function buildAllDatabaseExportPlan(options: AllDatabaseExportPlanInput):
       displayName: schema,
     }));
   }
+  // PostgreSQL supports multiple schemas in one database. Keep the database
+  // as the export unit so the backend can produce one restore script for all
+  // schemas instead of one file per schema.
+  if (options.dbType === "postgres" && options.schemaAware) {
+    return options.databases.map((database) => ({
+      database,
+      schema: "",
+      fileStem: database,
+      displayName: database,
+    }));
+  }
   return options.databases.flatMap((database) => {
     const schemas = options.schemaAware ? filterExportableSchemas(options.schemasByDatabase?.[database] ?? [], options.dbType).filter((schema) => schema.trim()) : [database];
     const exportSchemas = schemas.length > 0 ? schemas : [database];