[opt](test) add header check test case (#38758) (#39125)

pick from master #38758

ensure header do not be changed unexpectedly

regression-test/suites/mysql_compatibility_p0/header.groovy

@@ -0,0 +1,31 @@
+// 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.
+
+import org.apache.doris.regression.util.JdbcUtils
+
+suite ("header") {
+
+    def (result, meta) = JdbcUtils.executeToList(context.getConnection(), "select connection_id(), database()")
+
+    println meta
+
+    assertEquals("connection_id()", meta.getColumnName(1))
+    assertEquals("database()", meta.getColumnName(2))
+
+    assertEquals("connection_id()", meta.getColumnLabel(1))
+    assertEquals("database()", meta.getColumnLabel(2))
+}