Update QueryableWithAttr

Src/Asp.NetCore2/SqlSugar/Abstract/QueryableProvider/QueryableHelper.cs

@@ -1294,6 +1294,10 @@ namespace SqlSugar
                     }
                 }
             }
+            if (tableName == null) 
+            {
+                tableName = entity.DbTableName;
+            }
             return tableName;
         }
         protected string AppendSelect(List<EntityColumnInfo> entityColumnInfos,string sql, ReadOnlyCollection<ParameterExpression> parameters, List<EntityColumnInfo> columnsResult, int parameterIndex1)

Src/Asp.NetCore2/SqlSugar/SqlSugarForCore.nuspec

@@ -2,7 +2,7 @@
 <package >
   <metadata>
     <id>SqlSugarCore</id>
-    <version>5.1.4.88</version>
+    <version>5.1.4.89-previe05</version>
     <authors>sunkaixuan</authors>
     <owners>果糖大数据科技</owners>
     <licenseUrl>http://www.apache.org/licenses/LICENSE-2.0.html</licenseUrl>