diff --git a/ext/sheets/gsheet/gsheet.go b/ext/sheets/gsheet/gsheet.go
index a933ba4914..56359482fb 100644
--- a/ext/sheets/gsheet/gsheet.go
+++ b/ext/sheets/gsheet/gsheet.go
@@ -48,7 +48,6 @@ func (gs *GSheets) getSheetContent(sheetID, sheetRange string) ([][]interface{},
 		batchGetCall = batchGetCall.Ranges(sheetRange)
 	}
 	resp, err := batchGetCall.Do()
-
 	if err != nil {
 		return nil, err
 	}
diff --git a/ext/store/maxcompute/external_table.go b/ext/store/maxcompute/external_table.go
index ed47bb617b..9925db68ca 100644
--- a/ext/store/maxcompute/external_table.go
+++ b/ext/store/maxcompute/external_table.go
@@ -19,6 +19,7 @@ type McExternalTable interface {
 		hints, alias map[string]string,
 	) error
 	BatchLoadTables(tableNames []string) ([]*odps.Table, error)
+	Delete(tableName string, ifExists bool) error
 }
 
 type ExternalTableHandle struct {
@@ -53,9 +54,12 @@ func (e ExternalTableHandle) Create(res *resource.Resource) error {
 	return nil
 }
 
-func (ExternalTableHandle) Update(_ *resource.Resource) error {
-	// TODO implement me
-	panic("implement me")
+func (e ExternalTableHandle) Update(res *resource.Resource) error {
+	err := e.mcExternalTable.Delete(res.FullName(), true)
+	if err != nil {
+		return err
+	}
+	return e.Create(res)
 }
 
 func (e ExternalTableHandle) Exists(tableName string) bool {
diff --git a/ext/store/maxcompute/external_table_test.go b/ext/store/maxcompute/external_table_test.go
index b845dd4780..abee410d03 100644
--- a/ext/store/maxcompute/external_table_test.go
+++ b/ext/store/maxcompute/external_table_test.go
@@ -85,8 +85,9 @@ func TestExternalTableHandle(t *testing.T) {
 
 			defer schema.AssertExpectations(t)
 			odpsIns := new(mockOdpsIns)
-
+			odpsIns.On("SetCurrentSchemaName", mock.Anything)
 			defer odpsIns.AssertExpectations(t)
+
 			tableHandle := maxcompute.NewExternalTableHandle(odpsIns, schema, table)
 
 			res, err := resource.NewResource(fullName, maxcompute.KindExternalTable, mcStore, tnnt, &metadata, spec)
@@ -104,7 +105,7 @@ func TestExternalTableHandle(t *testing.T) {
 
 			defer schema.AssertExpectations(t)
 			odpsIns := new(mockOdpsIns)
-
+			odpsIns.On("SetCurrentSchemaName", mock.Anything)
 			defer odpsIns.AssertExpectations(t)
 			tableHandle := maxcompute.NewExternalTableHandle(odpsIns, schema, table)
 
@@ -123,7 +124,7 @@ func TestExternalTableHandle(t *testing.T) {
 
 			defer schema.AssertExpectations(t)
 			odpsIns := new(mockOdpsIns)
-
+			odpsIns.On("SetCurrentSchemaName", mock.Anything)
 			defer odpsIns.AssertExpectations(t)
 			tableHandle := maxcompute.NewExternalTableHandle(odpsIns, schema, table)
 
@@ -174,6 +175,11 @@ func (m *mockExternalTable) CreateExternal(schema tableschema.TableSchema, creat
 	return args.Error(0)
 }
 
+func (m *mockExternalTable) Delete(tableName string, ifExists bool) error {
+	args := m.Called(tableName, ifExists)
+	return args.Error(0)
+}
+
 func (m *mockExternalTable) BatchLoadTables(tableNames []string) ([]*odps.Table, error) {
 	args := m.Called(tableNames)
 	if args.Get(0) == nil {
diff --git a/ext/store/maxcompute/table_test.go b/ext/store/maxcompute/table_test.go
index c8fd167cf0..156854bc69 100644
--- a/ext/store/maxcompute/table_test.go
+++ b/ext/store/maxcompute/table_test.go
@@ -63,6 +63,10 @@ func (m *mockOdpsIns) CurrentSchemaName() string {
 	return args.String(0)
 }
 
+func (m *mockOdpsIns) SetCurrentSchemaName(schemaName string) {
+	m.Called(schemaName)
+}
+
 func TestTableHandle(t *testing.T) {
 	accessID, accessKey, endpoint := "LNRJ5tH1XMSINW5J3TjYAvfX", "lAZBJhdkNbwVj3bej5BuhjwbdV0nSp", "http://service.ap-southeast-5.maxcompute.aliyun.com/api"
 	projectName, schemaName, tableName := "proj", "schema", "test_table"