[improvement](planner)Adjust the field naming rules when creating tables

fe/fe-core/src/main/java/org/apache/doris/common/FeNameFormat.java

@@ -28,7 +28,7 @@ public class FeNameFormat {
     private static final String LABEL_REGEX = "^[-_A-Za-z0-9]{1,128}$";
     private static final String COMMON_NAME_REGEX = "^[a-zA-Z][a-zA-Z0-9_]{0,63}$";
     private static final String COMMON_TABLE_NAME_REGEX = "^[a-zA-Z][a-zA-Z0-9_]*$";
-    private static final String COLUMN_NAME_REGEX = "^[_a-zA-Z@][a-zA-Z0-9_]{0,63}$";
+    private static final String COLUMN_NAME_REGEX = "^[_a-zA-Z@0-9][a-zA-Z0-9_]{0,255}$";
 
     public static final String FORBIDDEN_PARTITION_NAME = "placeholder_";
 

regression-test/suites/ddl_p0/test_fnf.groovy

@@ -0,0 +1,84 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+suite("test_fnf") {
+    try {
+        sql """
+            CREATE TABLE IF NOT EXISTS `test_fnf` (
+              `test_varchar` varchar(1) NULL,
+              `0test_varchar` varchar(1) NULL,
+              `@test_varchar` varchar(1) NULL,
+              `_test_varchar` varchar(1) NULL,
+              `_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_var` varchar(1) NULL,
+              `@test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_var` varchar(1) NULL,
+              `0test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_var` varchar(1) NULL
+            ) ENGINE=OLAP
+            UNIQUE KEY(`test_varchar`)
+            DISTRIBUTED BY HASH(`test_varchar`) BUCKETS 3
+              PROPERTIES (
+              "replication_allocation" = "tag.location.default: 1",
+              "in_memory" = "false",
+              "storage_format" = "V2"
+            )
+            """
+    } catch (java.sql.SQLException t){
+        assertTrue(false)
+    }
+
+    try {
+        sql """
+            CREATE TABLE IF NOT EXISTS `test_fnf_error_1` (
+              `test@_varchar` varchar(1) NULL
+            ) ENGINE=OLAP
+            UNIQUE KEY(`test_varchar`)
+            DISTRIBUTED BY HASH(`test_varchar`) BUCKETS 3
+              PROPERTIES (
+              "replication_allocation" = "tag.location.default: 1",
+              "in_memory" = "false",
+              "storage_format" = "V2"
+            )
+            """
+    } catch (java.sql.SQLException t){
+        assertTrue(true)
+    }
+
+    try {
+        sql """
+            CREATE TABLE IF NOT EXISTS `test_fnf_error_2` (
+               `test_varchar` varchar(1) NULL,
+               `_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varchar_test_varc` varchar(1) NULL
+            ) ENGINE=OLAP
+            UNIQUE KEY(`test_varchar`)
+            DISTRIBUTED BY HASH(`test_varchar`) BUCKETS 3
+              PROPERTIES (
+              "replication_allocation" = "tag.location.default: 1",
+              "in_memory" = "false",
+              "storage_format" = "V2"
+            )
+            """
+    } catch (java.sql.SQLException t){
+        assertTrue(true)
+    } finally {
+        sql """ DROP TABLE IF EXISTS test_fnf """
+
+        sql """ DROP TABLE IF EXISTS test_fnf_error_1 """
+
+        sql """ DROP TABLE IF EXISTS test_fnf_error_2 """
+    }
+
+}
+