[BugFix] Fix case-sensitive partition column validation in materialized view analyzer (backport #62598) (#62620)

Signed-off-by: stephen <stephen5217@163.com>
Co-authored-by: stephen <91597003+stephen-shelby@users.noreply.github.com>

Author: mergify[bot]

fe/fe-core/src/main/java/com/starrocks/sql/analyzer/MaterializedViewAnalyzer.java

@@ -873,7 +873,7 @@ private void determinePartitionType(CreateMaterializedViewStatement statement,
             } else {
                 List<Column> refPartitionCols = refBaseTable.getPartitionColumns();
                 Optional<Column> refPartitionColOpt = refPartitionCols.stream()
-                        .filter(col -> col.getName().equals(slotRef.getColumnName()))
+                        .filter(col -> col.getName().equalsIgnoreCase(slotRef.getColumnName()))
                         .findFirst();
                 if (refPartitionColOpt.isEmpty()) {
                     throw new SemanticException("Materialized view partition column in partition exp " +

fe/fe-core/src/test/java/com/starrocks/sql/analyzer/MaterializedViewAnalyzerTest.java

@@ -515,4 +515,10 @@ public void testReplicationNum() throws Exception {
 
         Config.default_replication_num = defaultReplication;
     }
+
+    @Test
+    public void testCreateMVCheckPartitionNameIgnoreCaseSensitive() {
+        analyzeSuccess("create materialized view mv_hive_0 partition by str2date(L_SHIPDATE, '%Y%m%d') refresh manual as " +
+                "SELECT l_partkey, L_SHIPDATE  FROM hive0.partitioned_db.lineitem_mul_par3 as a");
+    }
 }