[enhancement](Nereids)support max function (#11795)

- add aggregate function max to Nereids
- add function P0 regression test for Nereids

fe/fe-core/src/main/java/org/apache/doris/analysis/FunctionCallExpr.java

@@ -1402,6 +1402,7 @@ public class FunctionCallExpr extends Expr {
             fn = getBuiltinFunction(fnName.getFunction(), childTypes, Function.CompareMode.IS_NONSTRICT_SUPERTYPE_OF);
             type = fn.getReturnType();
         } else if (fnName.getFunction().equalsIgnoreCase("year")
+                || fnName.getFunction().equalsIgnoreCase("max")
                 || fnName.getFunction().equalsIgnoreCase("min")
                 || fnName.getFunction().equalsIgnoreCase("avg")) {
             Type childType = getChild(0).type;

fe/fe-core/src/main/java/org/apache/doris/nereids/rules/analysis/BindFunction.java

@@ -26,6 +26,7 @@ import org.apache.doris.nereids.trees.expressions.NamedExpression;
 import org.apache.doris.nereids.trees.expressions.TimestampArithmetic;
 import org.apache.doris.nereids.trees.expressions.functions.Avg;
 import org.apache.doris.nereids.trees.expressions.functions.Count;
+import org.apache.doris.nereids.trees.expressions.functions.Max;
 import org.apache.doris.nereids.trees.expressions.functions.Min;
 import org.apache.doris.nereids.trees.expressions.functions.Substring;
 import org.apache.doris.nereids.trees.expressions.functions.Sum;
@@ -102,6 +103,12 @@ public class BindFunction implements AnalysisRuleFactory {
                     return new Count();
                 }
                 return new Count(unboundFunction.getArguments().get(0));
+            } else if (name.equalsIgnoreCase("max")) {
+                List<Expression> arguments = unboundFunction.getArguments();
+                if (arguments.size() != 1) {
+                    return unboundFunction;
+                }
+                return new Max(unboundFunction.getArguments().get(0));
             } else if (name.equalsIgnoreCase("min")) {
                 List<Expression> arguments = unboundFunction.getArguments();
                 if (arguments.size() != 1) {

fe/fe-core/src/main/java/org/apache/doris/nereids/trees/expressions/functions/Max.java

@@ -0,0 +1,55 @@
+// 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.
+
+package org.apache.doris.nereids.trees.expressions.functions;
+
+import org.apache.doris.nereids.trees.expressions.Expression;
+import org.apache.doris.nereids.trees.expressions.shape.UnaryExpression;
+import org.apache.doris.nereids.types.DataType;
+
+import com.google.common.base.Preconditions;
+
+import java.util.List;
+
+/** max agg function. */
+public class Max extends AggregateFunction implements UnaryExpression {
+
+    public Max(Expression child) {
+        super("max", child);
+    }
+
+    @Override
+    public DataType getDataType() {
+        return child().getDataType();
+    }
+
+    @Override
+    public boolean nullable() {
+        return child().nullable();
+    }
+
+    @Override
+    public Expression withChildren(List<Expression> children) {
+        Preconditions.checkArgument(children.size() == 1);
+        return new Max(children.get(0));
+    }
+
+    @Override
+    public DataType getIntermediateType() {
+        return getDataType();
+    }
+}

fe/fe-core/src/test/java/org/apache/doris/nereids/trees/expressions/ExpressionParserTest.java

@@ -149,6 +149,12 @@ public class ExpressionParserTest extends ParserTestBase {
 
         String min = "select min(a), min(b) as m from test1";
         assertSql(min);
+
+        String max = "select max(a), max(b) as m from test1";
+        assertSql(max);
+
+        String maxAndMin = "select max(a), min(b) from test1";
+        assertSql(maxAndMin);
     }
 
     @Test

regression-test/data/nereids_syntax_p0/function.out

@@ -0,0 +1,16 @@
+-- This file is automatically generated. You should know what you did if you want to edit this
+-- !max --
+10	2959704
+
+-- !min --
+7	1705830
+
+-- !max_and_min --
+2959704	7
+
+-- !count --
+3	3
+
+-- !avg --
+2.5E-323	1.1644193E-317
+

regression-test/suites/nereids_syntax_p0/function.groovy

@@ -0,0 +1,47 @@
+// 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("function") {
+    sql """
+        SET enable_vectorized_engine=true
+    """
+
+    sql """
+        SET enable_nereids_planner=true
+    """
+
+    order_qt_max """
+        SELECT max(lo_discount), max(lo_extendedprice) AS max_extendedprice FROM lineorder;
+    """
+
+    order_qt_min """
+        SELECT min(lo_discount), min(lo_extendedprice) AS min_extendedprice FROM lineorder;
+    """
+
+    order_qt_max_and_min """
+        SELECT max(lo_extendedprice), min(lo_discount) FROM lineorder;
+    """
+
+    order_qt_count """
+        SELECT count(c_city), count(*) AS custdist FROM customer;
+    """
+
+    order_qt_avg """
+        SELECT avg(lo_tax), avg(lo_extendedprice) AS avg_extendedprice FROM lineorder;
+    """
+}
+