diff --git a/be/src/olap/rowset/segment_v2/column_reader.cpp b/be/src/olap/rowset/segment_v2/column_reader.cpp
index fa5299df2f0030..f5833ee5734899 100644
--- a/be/src/olap/rowset/segment_v2/column_reader.cpp
+++ b/be/src/olap/rowset/segment_v2/column_reader.cpp
@@ -464,6 +464,9 @@ Status ColumnReader::next_batch_of_zone_map(size_t* n, vectorized::MutableColumn
     } else {
         if (is_string) {
             auto sv = (StringRef*)max_value->cell_ptr();
+            if (type == FieldType::OLAP_FIELD_TYPE_CHAR) {
+                *sv = sv->trim_tail_padding_zero();
+            }
             dst->insert_data(sv->data, sv->size);
         } else {
             dst->insert_many_fix_len_data(static_cast<const char*>(max_value->cell_ptr()), 1);
@@ -476,6 +479,9 @@ Status ColumnReader::next_batch_of_zone_map(size_t* n, vectorized::MutableColumn
     } else {
         if (is_string) {
             auto sv = (StringRef*)min_value->cell_ptr();
+            if (type == FieldType::OLAP_FIELD_TYPE_CHAR) {
+                *sv = sv->trim_tail_padding_zero();
+            }
             dst->insert_data_repeatedly(sv->data, sv->size, size);
         } else {
             // TODO: the work may cause performance problem, opt latter
diff --git a/be/src/pipeline/exec/cache_source_operator.h b/be/src/pipeline/exec/cache_source_operator.h
index 49f0c376c47cbe..984288b04f7cd9 100644
--- a/be/src/pipeline/exec/cache_source_operator.h
+++ b/be/src/pipeline/exec/cache_source_operator.h
@@ -58,8 +58,8 @@ class CacheSourceLocalState final : public PipelineXLocalState<DataQueueSharedSt
     int64_t _version = 0;
     std::vector<vectorized::BlockUPtr> _local_cache_blocks;
     std::vector<int> _slot_orders;
-    size_t _current_query_cache_bytes = 0;
-    size_t _current_query_cache_rows = 0;
+    int64_t _current_query_cache_bytes = 0;
+    int64_t _current_query_cache_rows = 0;
     bool _need_insert_cache = true;
 
     QueryCacheHandle _query_cache_handle;
diff --git a/be/src/vec/common/string_ref.cpp b/be/src/vec/common/string_ref.cpp
index 864d2454e64cbd..bac052e741f581 100644
--- a/be/src/vec/common/string_ref.cpp
+++ b/be/src/vec/common/string_ref.cpp
@@ -41,6 +41,17 @@ StringRef StringRef::trim() const {
     return StringRef(data + begin, end - begin + 1);
 }
 
+StringRef StringRef::trim_tail_padding_zero() const {
+    // Remove trailing padding zero.
+    int64_t end = size - 1;
+
+    while (end >= 0 && data[end] == '\0') {
+        --end;
+    }
+
+    return StringRef(data, end + 1);
+}
+
 StringRef StringRef::trim_whitespace() const {
     // Remove leading and trailing whitespace.
     int64_t begin = 0;
diff --git a/be/src/vec/common/string_ref.h b/be/src/vec/common/string_ref.h
index 508399c4af9f93..27ab1137fc3bb0 100644
--- a/be/src/vec/common/string_ref.h
+++ b/be/src/vec/common/string_ref.h
@@ -220,6 +220,7 @@ struct StringRef {
 
     // Trims leading and trailing spaces.
     StringRef trim() const;
+    StringRef trim_tail_padding_zero() const;
     StringRef trim_whitespace() const;
     StringRef trim_quote() const;
 
diff --git a/regression-test/data/query_p0/aggregate/support_type/max/max.out b/regression-test/data/query_p0/aggregate/support_type/max/max.out
index 01e6a911dd045c..4bcd72cd160568 100644
Binary files a/regression-test/data/query_p0/aggregate/support_type/max/max.out and b/regression-test/data/query_p0/aggregate/support_type/max/max.out differ
diff --git a/regression-test/data/query_p0/aggregate/support_type/min/min.out b/regression-test/data/query_p0/aggregate/support_type/min/min.out
index 11847e951e8c2c..0c0893e375c554 100644
Binary files a/regression-test/data/query_p0/aggregate/support_type/min/min.out and b/regression-test/data/query_p0/aggregate/support_type/min/min.out differ
diff --git a/regression-test/suites/query_p0/aggregate/support_type/min/min.groovy b/regression-test/suites/query_p0/aggregate/support_type/min/min.groovy
index b5fd8ff4b59bcd..5b00298e2743c5 100644
--- a/regression-test/suites/query_p0/aggregate/support_type/min/min.groovy
+++ b/regression-test/suites/query_p0/aggregate/support_type/min/min.groovy
@@ -97,6 +97,9 @@ suite("min") {
     qt_min_double """select min(col_double) from d_table;"""
 
     qt_min_char """select min(col_char) from d_table;"""
+    // Test length(min(col_char)) with different disable_nereids_rules settings
+    sql "set disable_nereids_rules='';"
+    qt_min_char_length_default """select length(min(col_char)) from d_table;"""
     qt_min_varchar """select min(col_varchar) from d_table;"""
     qt_min_string """select min(col_string) from d_table;"""
 
@@ -110,4 +113,4 @@ suite("min") {
 
     qt_min_ipv4 """select min(col_ipv4) from d_table;"""
     qt_min_ipv6 """select min(col_ipv6) from d_table;"""
-}
\ No newline at end of file
+}