amorynan commented on code in PR #29297:
URL: https://github.com/apache/doris/pull/29297#discussion_r1441453803


##########
be/src/vec/columns/column_map.cpp:
##########
@@ -231,6 +231,39 @@ const char* 
ColumnMap::deserialize_and_insert_from_arena(const char* pos) {
     return pos;
 }
 
+int ColumnMap::compare_at(size_t n, size_t m, const IColumn& rhs_, int 
nan_direction_hint) const {
+    const auto& rhs = assert_cast<const ColumnMap&>(rhs_);
+
+    size_t lhs_size = size_at(n);
+    size_t rhs_size = rhs.size_at(m);
+
+    size_t lhs_offset = offset_at(n);
+    size_t rhs_offset = rhs.offset_at(m);
+
+    size_t min_size = std::min(lhs_size, rhs_size);
+
+    int a = 0;
+    if (a) {

Review Comment:
   I will delete it



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