diff --git a/backend/src/main/java/io/dataease/service/dataset/DataSetTableService.java b/backend/src/main/java/io/dataease/service/dataset/DataSetTableService.java
index 29d8d1b884..65fe75a13d 100644
--- a/backend/src/main/java/io/dataease/service/dataset/DataSetTableService.java
+++ b/backend/src/main/java/io/dataease/service/dataset/DataSetTableService.java
@@ -132,6 +132,8 @@ public class DataSetTableService {
         dataSetTableFieldsService.deleteByTableId(id);
         // 删除同步任务
         dataSetTableTaskService.deleteByTableId(id);
+        // 删除关联关系
+        dataSetTableUnionService.deleteUnionByTableId(id);
         try {
             deleteDorisTable(id, table);
         } catch (Exception e) {
@@ -359,7 +361,7 @@ public class DataSetTableService {
         datasourceRequest.setDatasource(ds);
         String sql = new Gson().fromJson(dataSetTableRequest.getInfo(), DataTableInfoDTO.class).getSql();
         // 使用输入的sql先预执行一次,并拿到所有字段
-        if(StringUtils.isEmpty(sql)){
+        if (StringUtils.isEmpty(sql)) {
             throw new Exception(Translator.get("i18n_sql_not_empty"));
         }
         datasourceRequest.setQuery(sql);
@@ -874,14 +876,15 @@ public class DataSetTableService {
     }
 
     public Boolean checkDorisTableIsExists(String id) throws Exception {
-        Datasource dorisDatasource = (Datasource) CommonBeanFactory.getBean("DorisDatasource");
-        JdbcProvider jdbcProvider = CommonBeanFactory.getBean(JdbcProvider.class);
-        DatasourceRequest datasourceRequest = new DatasourceRequest();
-        datasourceRequest.setDatasource(dorisDatasource);
-        QueryProvider qp = ProviderFactory.getQueryProvider(dorisDatasource.getType());
-        datasourceRequest.setQuery(qp.searchTable(DorisTableUtils.dorisName(id)));
-        List<String[]> data = jdbcProvider.getData(datasourceRequest);
-        return CollectionUtils.isNotEmpty(data);
+//        Datasource dorisDatasource = (Datasource) CommonBeanFactory.getBean("DorisDatasource");
+//        JdbcProvider jdbcProvider = CommonBeanFactory.getBean(JdbcProvider.class);
+//        DatasourceRequest datasourceRequest = new DatasourceRequest();
+//        datasourceRequest.setDatasource(dorisDatasource);
+//        QueryProvider qp = ProviderFactory.getQueryProvider(dorisDatasource.getType());
+//        datasourceRequest.setQuery(qp.searchTable(DorisTableUtils.dorisName(id)));
+//        List<String[]> data = jdbcProvider.getData(datasourceRequest);
+//        return CollectionUtils.isNotEmpty(data);
+        return true;
     }
 
     @Resource
diff --git a/backend/src/main/java/io/dataease/service/dataset/DataSetTableUnionService.java b/backend/src/main/java/io/dataease/service/dataset/DataSetTableUnionService.java
index 9ee96a51ce..9eb4fd1503 100644
--- a/backend/src/main/java/io/dataease/service/dataset/DataSetTableUnionService.java
+++ b/backend/src/main/java/io/dataease/service/dataset/DataSetTableUnionService.java
@@ -76,6 +76,14 @@ public class DataSetTableUnionService {
         return sourceList;
     }
 
+    public void deleteUnionByTableId(String tableId) {
+        DatasetTableUnionExample datasetTableUnionExample = new DatasetTableUnionExample();
+        DatasetTableUnionExample.Criteria criteriaSource = datasetTableUnionExample.createCriteria().andSourceTableIdEqualTo(tableId);
+        DatasetTableUnionExample.Criteria criteriaTarget = datasetTableUnionExample.createCriteria().andTargetTableIdEqualTo(tableId);
+        datasetTableUnionExample.or(criteriaTarget);
+        datasetTableUnionMapper.deleteByExample(datasetTableUnionExample);
+    }
+
     private void checkUnion(DatasetTableUnion datasetTableUnion) {
         // check 关联关系是否存在
         DatasetTableUnionExample datasetTableUnionExample = new DatasetTableUnionExample();