小编Joj*_*obs的帖子

我正在关注 Qwiklabs 上有关 Bigquery 和金融欺诈检测的教程，并遇到了下面的一个查询，我无法理解该查询

CREATE OR REPLACE TABLE finance.fraud_data_model AS
SELECT
*
FROM finance.fraud_data_sample  
EXCEPT distinct select * from finance.fraud_data_test  

我试图了解从表中检索或忽略的内容，或者当涉及其他两个表时finance.fraud_data_test主要由什么组成？finance.fraud_data_model

我正在尝试将文件上传到 Firebase 存储，但不断收到错误消息

 TypeError: appImpl.storage is not a function
at Object.getStorageInstance (http://localhost:61661/packages/firebase_storage_web/src/interop/storage.dart.lib.js:739:65)
at new firebase_storage_web.FirebaseStorageWeb.new (http://localhost:61661/packages/firebase_storage_web/src/reference_web.dart.lib.js:248:33)
at firebase_storage_web.FirebaseStorageWeb._nullInstance.delegateFor (http://localhost:61661/packages/firebase_storage_web/src/reference_web.dart.lib.js:203:14)
at Function.instanceFor (http://localhost:61661/packages/firebase_storage_platform_interface/src/platform_interface/platform_interface_task_snapshot.dart.lib.js:870:83)
at firebase_storage.FirebaseStorage.__.get [_delegate] (http://localhost:61661/packages/firebase_storage/firebase_storage.dart.lib.js:85:120)
at firebase_storage.FirebaseStorage.__.ref (http://localhost:61661/packages/firebase_storage/firebase_storage.dart.lib.js:125:58)
at importFile (http://localhost:61661/packages/denance/data_management.dart.lib.js:4737:53)
at importFile.next (<anonymous>)
at http://localhost:61661/dart_sdk.js:37445:33
at _RootZone.runUnary (http://localhost:61661/dart_sdk.js:37316:59)
at _FutureListener.thenAwait.handleValue (http://localhost:61661/dart_sdk.js:32551:29)
at handleValueCallback (http://localhost:61661/dart_sdk.js:33078:49)
at Function._propagateToListeners (http://localhost:61661/dart_sdk.js:33116:17)
at _Future.new.[_completeWithValue] (http://localhost:61661/dart_sdk.js:32964:23)
at async._AsyncCallbackEntry.new.callback (http://localhost:61661/dart_sdk.js:32985:35)
at Object._microtaskLoop (http://localhost:61661/dart_sdk.js:37568:13)
at _startMicrotaskLoop (http://localhost:61661/dart_sdk.js:37574:13)
at http://localhost:61661/dart_sdk.js:33324:9

我不确定这个错误是什么，这是我的代码实现

 Future importFile() async {


    FilePickerResult ? result = await FilePicker.platform.pickFiles();

    if (result != null) {
        Uint8List …