[enhance](mtmv)support olap table partition column is null

fe/fe-core/src/main/java/org/apache/doris/catalog/OlapTable.java

@@ -2726,6 +2726,6 @@ public boolean needAutoRefresh() {
 
     @Override
     public boolean isPartitionColumnAllowNull() {
-        return false;
+        return true;
     }
 }

fe/fe-core/src/test/java/org/apache/doris/nereids/rules/exploration/mv/MaterializedViewUtilsTest.java

@@ -269,7 +269,7 @@ public void getRelatedTableInfoTestWithoutGroupNullTest() {
                             Plan rewrittenPlan = nereidsPlanner.getRewrittenPlan();
                             Optional<RelatedTableInfo> relatedTableInfo =
                                     MaterializedViewUtils.getRelatedTableInfo("l_shipdate", rewrittenPlan);
-                            Assertions.assertFalse(relatedTableInfo.isPresent());
+                            Assertions.assertTrue(relatedTableInfo.isPresent());
                         });
     }
 

regression-test/data/mtmv_p0/test_null_partition_mtmv.out

@@ -0,0 +1,19 @@
+-- This file is automatically generated. You should know what you did if you want to edit this
+-- !list_null --
+2	\N
+
+-- !list_1 --
+1	1
+
+-- !range_p_32768_10 --
+1	\N
+
+-- !range_p_10_20 --
+2	15
+
+-- !range_p_00000101_20201111 --
+1	\N
+
+-- !range_p_20201111_20211111 --
+2	2021-01-01
+

regression-test/suites/mtmv_p0/test_null_partition_mtmv.groovy

@@ -0,0 +1,169 @@
+// 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.junit.Assert;
+
+suite("test_null_partition_mtmv") {
+    def tableName = "t_test_null_partition_mtmv_user"
+    def mvName = "t_test_null_partition_mtmv"
+    def dbName = "regression_test_mtmv_p0"
+    sql """drop table if exists `${tableName}`"""
+    sql """drop materialized view if exists ${mvName};"""
+
+    // list table
+    sql """
+        CREATE TABLE `${tableName}` (
+          `user_id` LARGEINT NOT NULL COMMENT '\"用户id\"',
+          `num` SMALLINT COMMENT '\"数量\"'
+        ) ENGINE=OLAP
+        DUPLICATE KEY(`user_id`, `num`)
+        COMMENT 'OLAP'
+        PARTITION BY list(`num`)
+        (
+        PARTITION p_1 VALUES IN (1),
+        PARTITION p_null VALUES IN (null)
+        )
+        DISTRIBUTED BY HASH(`user_id`) BUCKETS 2
+        PROPERTIES ('replication_num' = '1') ;
+        """
+    sql """
+        insert into ${tableName} values(1,1),(2,null);
+        """
+
+    sql """
+        CREATE MATERIALIZED VIEW ${mvName}
+            BUILD DEFERRED REFRESH AUTO ON MANUAL
+            partition by(`num`)
+            DISTRIBUTED BY RANDOM BUCKETS 2
+            PROPERTIES ('replication_num' = '1')
+            AS
+            SELECT * FROM ${tableName};
+    """
+    def showPartitionsResult = sql """show partitions from ${mvName}"""
+    logger.info("showPartitionsResult: " + showPartitionsResult.toString())
+    assertTrue(showPartitionsResult.toString().contains("p_1"))
+    assertTrue(showPartitionsResult.toString().contains("p_NULL"))
+
+    sql """
+            REFRESH MATERIALIZED VIEW ${mvName} AUTO
+        """
+    def jobName = getJobName(dbName, mvName);
+    log.info(jobName)
+    waitingMTMVTaskFinished(jobName)
+
+    order_qt_list_null "SELECT * FROM ${mvName} partitions(p_NULL) order by user_id,num"
+    order_qt_list_1 "SELECT * FROM ${mvName} partitions(p_1) order by user_id,num"
+
+    sql """drop table if exists `${tableName}`"""
+    sql """drop materialized view if exists ${mvName};"""
+
+
+    // range table
+    sql """
+        CREATE TABLE `${tableName}` (
+          `user_id` LARGEINT NOT NULL COMMENT '\"用户id\"',
+          `num` SMALLINT COMMENT '\"数量\"'
+        ) ENGINE=OLAP
+        DUPLICATE KEY(`user_id`, `num`)
+        COMMENT 'OLAP'
+        PARTITION BY range(`num`)
+        (
+        PARTITION p_10 VALUES LESS THAN (10),
+        PARTITION p_20 VALUES LESS THAN (20)
+        )
+        DISTRIBUTED BY HASH(`user_id`) BUCKETS 2
+        PROPERTIES ('replication_num' = '1') ;
+        """
+    sql """
+        insert into ${tableName} values(1,null),(2,15);
+        """
+
+    sql """
+        CREATE MATERIALIZED VIEW ${mvName}
+            BUILD DEFERRED REFRESH AUTO ON MANUAL
+            partition by(`num`)
+            DISTRIBUTED BY RANDOM BUCKETS 2
+            PROPERTIES ('replication_num' = '1')
+            AS
+            SELECT * FROM ${tableName};
+    """
+    showPartitionsResult = sql """show partitions from ${mvName}"""
+    logger.info("showPartitionsResult: " + showPartitionsResult.toString())
+    assertTrue(showPartitionsResult.toString().contains("p_32768_10"))
+    assertTrue(showPartitionsResult.toString().contains("p_10_20"))
+
+    sql """
+            REFRESH MATERIALIZED VIEW ${mvName} AUTO
+        """
+    jobName = getJobName(dbName, mvName);
+    log.info(jobName)
+    waitingMTMVTaskFinished(jobName)
+
+    order_qt_range_p_32768_10 "SELECT * FROM ${mvName} partitions(p_32768_10) order by user_id,num"
+    order_qt_range_p_10_20 "SELECT * FROM ${mvName} partitions(p_10_20) order by user_id,num"
+
+    sql """drop table if exists `${tableName}`"""
+    sql """drop materialized view if exists ${mvName};"""
+
+    // range table
+    sql """
+        CREATE TABLE `${tableName}` (
+          `user_id` LARGEINT NOT NULL COMMENT '\"用户id\"',
+          `create_date` DATE
+        ) ENGINE=OLAP
+        DUPLICATE KEY(`user_id`, `create_date`)
+        COMMENT 'OLAP'
+        PARTITION BY range(`create_date`)
+        (
+        PARTITION p_10 VALUES LESS THAN ("2020-11-11"),
+        PARTITION p_20 VALUES LESS THAN ("2021-11-11")
+        )
+        DISTRIBUTED BY HASH(`user_id`) BUCKETS 2
+        PROPERTIES ('replication_num' = '1') ;
+        """
+    sql """
+        insert into ${tableName} values(1,null),(2,"2021-01-01");
+        """
+
+    sql """
+        CREATE MATERIALIZED VIEW ${mvName}
+            BUILD DEFERRED REFRESH AUTO ON MANUAL
+            partition by(`create_date`)
+            DISTRIBUTED BY RANDOM BUCKETS 2
+            PROPERTIES ('replication_num' = '1')
+            AS
+            SELECT * FROM ${tableName};
+    """
+    showPartitionsResult = sql """show partitions from ${mvName}"""
+    logger.info("showPartitionsResult: " + showPartitionsResult.toString())
+    assertTrue(showPartitionsResult.toString().contains("p_00000101_20201111"))
+    assertTrue(showPartitionsResult.toString().contains("p_20201111_20211111"))
+
+    sql """
+            REFRESH MATERIALIZED VIEW ${mvName} AUTO
+        """
+    jobName = getJobName(dbName, mvName);
+    log.info(jobName)
+    waitingMTMVTaskFinished(jobName)
+
+    order_qt_range_p_00000101_20201111 "SELECT * FROM ${mvName} partitions(p_00000101_20201111) order by user_id,create_date"
+    order_qt_range_p_20201111_20211111 "SELECT * FROM ${mvName} partitions(p_20201111_20211111) order by user_id,create_date"
+
+    sql """drop table if exists `${tableName}`"""
+    sql """drop materialized view if exists ${mvName};"""
+
+}