branch-2.1: [fix](mv)Fix direct select mv pre agg bug. #47658 (#47700)

Cherry-picked from #47658

Co-authored-by: James <lijibing@selectdb.com>

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

@@ -251,7 +251,9 @@ public class BindRelation extends OneAnalysisRuleFactory {
         List<Slot> childOutputSlots = olapScan.computeOutput();
         List<Expression> groupByExpressions = new ArrayList<>();
         List<NamedExpression> outputExpressions = new ArrayList<>();
-        List<Column> columns = olapTable.getBaseSchema();
+        List<Column> columns = olapScan.isIndexSelected()
+                ? olapTable.getSchemaByIndexId(olapScan.getSelectedIndexId())
+                : olapTable.getBaseSchema();
 
         for (Column col : columns) {
             // use exist slot in the plan

regression-test/data/statistics/test_analyze_mv.out

@@ -0,0 +1,6 @@
+-- This file is automatically generated. You should know what you did if you want to edit this
+-- !test_agg --
+1	6
+2	9
+3	6
+

regression-test/suites/statistics/test_analyze_mv.groovy

@@ -792,6 +792,25 @@ suite("test_analyze_mv") {
     assertEquals("1", result[0][7])
     assertEquals("5", result[0][8])
 
+    sql """drop table if exists testMvDirectSelect"""
+    sql """
+        CREATE TABLE testMvDirectSelect (
+            key1      int NOT NULL,
+            key2      int NOT NULL,
+            value     int SUM
+        )ENGINE=OLAP
+        AGGREGATE KEY(key1, key2)
+        COMMENT "OLAP"
+        DISTRIBUTED BY RANDOM BUCKETS 2
+        PROPERTIES (
+            "replication_num" = "1"
+        );
+    """
+
+    createMV("CREATE MATERIALIZED VIEW aggMv as select key1, SUM(value) from testMvDirectSelect group by key1;")
+    sql """insert into testMvDirectSelect values (1, 1, 1), (1, 2, 2), (1, 3, 3), (2, 1, 4), (2, 2, 5), (3, 2, 6)"""
+    qt_test_agg """select * from testMvDirectSelect index aggMv order by mv_key1"""
+
     sql """drop database if exists test_analyze_mv"""
 }