add eliminate order by key by uniform

fe/fe-core/src/main/java/org/apache/doris/nereids/rules/rewrite/EliminateOrderByConstant.java

@@ -17,9 +17,11 @@
 
 package org.apache.doris.nereids.rules.rewrite;
 
+import org.apache.doris.nereids.properties.DataTrait;
 import org.apache.doris.nereids.properties.OrderKey;
 import org.apache.doris.nereids.rules.Rule;
 import org.apache.doris.nereids.rules.RuleType;
+import org.apache.doris.nereids.trees.expressions.Slot;
 
 import com.google.common.collect.ImmutableList;
 
@@ -36,8 +38,10 @@ public Rule build() {
             List<OrderKey> orderKeys = sort.getOrderKeys();
             ImmutableList.Builder<OrderKey> orderKeysWithoutConstBuilder
                     = ImmutableList.builderWithExpectedSize(orderKeys.size());
+            DataTrait dataTrait = sort.child().getLogicalProperties().getTrait();
             for (OrderKey orderKey : orderKeys) {
-                if (!orderKey.getExpr().isConstant()) {
+                if (!orderKey.getExpr().isConstant() && !(orderKey.getExpr() instanceof Slot
+                        && dataTrait.isUniformAndNotNull((Slot) orderKey.getExpr()))) {
                     orderKeysWithoutConstBuilder.add(orderKey);
                 }
             }

regression-test/data/nereids_rules_p0/eliminate_order_by_constant/eliminate_order_by_constant.out

@@ -0,0 +1,34 @@
+-- This file is automatically generated. You should know what you did if you want to edit this
+-- !predicate --
+1	1
+1	1
+
+-- !predicate_order_by_two --
+1	1
+1	1
+
+-- !with_group_by --
+1	1
+
+-- !predicate_multi_other --
+1	1	100	apple
+1	1	100	apple
+
+-- !predicate_shape --
+PhysicalResultSink
+--filter((eliminate_order_by_constant_t.a = 1))
+----PhysicalOlapScan[eliminate_order_by_constant_t]
+
+-- !with_group_by_shape --
+PhysicalResultSink
+--PhysicalLimit[GLOBAL]
+----filter((eliminate_order_by_constant_t.a = 1))
+------PhysicalOlapScan[eliminate_order_by_constant_t]
+
+-- !predicate_multi_other_shape --
+PhysicalResultSink
+--PhysicalQuickSort[MERGE_SORT]
+----PhysicalQuickSort[LOCAL_SORT]
+------filter((eliminate_order_by_constant_t.a = 1))
+--------PhysicalOlapScan[eliminate_order_by_constant_t]
+

regression-test/suites/nereids_rules_p0/eliminate_order_by_constant/eliminate_order_by_constant.groovy

@@ -0,0 +1,45 @@
+// 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("eliminate_order_by_constant") {
+    sql "SET ignore_shape_nodes='PhysicalDistribute,PhysicalProject'"
+    sql "drop table if exists eliminate_order_by_constant_t"
+    sql """create table eliminate_order_by_constant_t(a int null, b int not null, c varchar(10) null, d date, dt datetime)
+    distributed by hash(a) properties("replication_num"="1");
+    """
+    sql """
+    INSERT INTO eliminate_order_by_constant_t (a, b, c, d, dt) VALUES
+    (1, 100, 'apple', '2023-01-01', '2023-01-01 10:00:00'),
+    (1, 100, 'apple', '2023-01-01', '2023-01-01 10:00:00'),
+    (2, 101, 'banana', '2023-01-02', '2023-01-02 11:00:00'),
+    (3, 102, 'cherry', '2023-01-03', '2023-01-03 12:00:00'),
+    (3, 102, 'cherry', '2023-01-03', '2023-01-03 12:00:00'), 
+    (NULL, 103, 'date', '2023-01-04', '2023-01-04 13:00:00'),
+    (4, 104, 'elderberry', '2023-01-05', '2023-01-05 14:00:00'),
+    (5, 105, NULL, '2023-01-06', '2023-01-06 15:00:00'),
+    (5, 105, NULL, '2023-01-06', '2023-01-06 15:00:00'),
+    (6, 106, 'fig', '2023-01-07', '2023-01-07 16:00:00'),
+    (NULL, 107, 'grape', '2023-01-08', '2023-01-08 17:00:00');
+    """
+    qt_predicate "select 1 as c1,a from eliminate_order_by_constant_t where a=1 order by a"
+    qt_predicate_order_by_two "select 1 as c1,a from eliminate_order_by_constant_t where a=1 order by a,c1"
+    qt_with_group_by """select 1 as c1,a from eliminate_order_by_constant_t where a=1 group by c1,a order by a"""
+    qt_predicate_multi_other """select 1 as c1,a,b,c from eliminate_order_by_constant_t where a=1 order by a,'abc',b,c"""
+    qt_predicate_shape "explain shape plan select 1 as c1,a from eliminate_order_by_constant_t where a=1 order by a"
+    qt_with_group_by_shape """explain shape plan select 1 as c1,a from eliminate_order_by_constant_t where a=1 group by c1,a order by a"""
+    qt_predicate_multi_other_shape """explain shape plan select 1 as c1,a,b,c from eliminate_order_by_constant_t where a=1 order by a,'abc',b,c"""
+}