diff --git a/dbms/src/Interpreters/JoinPartition.cpp b/dbms/src/Interpreters/JoinPartition.cpp
index 9023fcac831..9b55c493014 100644
--- a/dbms/src/Interpreters/JoinPartition.cpp
+++ b/dbms/src/Interpreters/JoinPartition.cpp
@@ -1202,89 +1202,6 @@ void cacheColumns(CachedColumnInfo * cached_column_info, MutableColumns & added_
     cached_column_info->state = CachedColumnState::CACHED;
 }
 
-template <typename Map>
-struct Adder<ASTTableJoin::Kind::LeftOuterSemi, ASTTableJoin::Strictness::All, Map>
-{
-    static bool addFound(
-        const typename Map::ConstLookupResult & it,
-        size_t num_columns_to_add,
-        MutableColumns & added_columns,
-        size_t i,
-        IColumn::Filter * /*filter*/,
-        IColumn::Offset & current_offset,
-        IColumn::Offsets * offsets,
-        const std::vector<size_t> & right_indexes,
-        ProbeProcessInfo & probe_process_info)
-    {
-        auto & mapped_value = static_cast<const typename Map::mapped_type::Base_t &>(it->getMapped());
-        size_t rows_joined = mapped_value.list_length;
-        bool need_generate_cached_columns = false;
-        auto * current = &mapped_value;
-        auto add_one_row = [&]() {
-            for (size_t j = 0; j < num_columns_to_add - 1; ++j)
-                added_columns[j]->insertFrom(
-                    *current->block->getByPosition(right_indexes[j]).column.get(),
-                    current->row_num);
-        };
-        if unlikely (
-            probe_process_info.cache_columns_threshold > 0 && rows_joined >= probe_process_info.cache_columns_threshold)
-        {
-            assert(mapped_value.cached_column_info != nullptr);
-            auto check_result = checkCachedColumnInfo(mapped_value.cached_column_info);
-            need_generate_cached_columns = check_result.second;
-            if (check_result.first)
-            {
-                insertCachedColumns(
-                    mapped_value.cached_column_info,
-                    added_columns,
-                    rows_joined,
-                    num_columns_to_add - 1);
-                current_offset += rows_joined;
-                (*offsets)[i] = current_offset;
-                /// we insert only one row to `match-helper` for each row of left block
-                /// so before the execution of `HandleOtherConditions`, column sizes of temporary block may be different.
-                added_columns[num_columns_to_add - 1]->insert(FIELD_INT8_1);
-                return false;
-            }
-            add_one_row();
-            current = static_cast<const typename Map::mapped_type::Base_t *>(current->cached_column_info->next);
-        }
-        for (; current != nullptr; current = current->next)
-        {
-            add_one_row();
-        }
-        current_offset += rows_joined;
-        (*offsets)[i] = current_offset;
-        /// we insert only one row to `match-helper` for each row of left block
-        /// so before the execution of `HandleOtherConditions`, column sizes of temporary block may be different.
-        added_columns[num_columns_to_add - 1]->insert(FIELD_INT8_1);
-
-        if unlikely (need_generate_cached_columns)
-        {
-            cacheColumns(mapped_value.cached_column_info, added_columns, rows_joined, num_columns_to_add - 1);
-        }
-        return false;
-    }
-
-    static bool addNotFound(
-        size_t num_columns_to_add,
-        MutableColumns & added_columns,
-        size_t i,
-        IColumn::Filter * /*filter*/,
-        IColumn::Offset & current_offset,
-        IColumn::Offsets * offsets,
-        ProbeProcessInfo & /*probe_process_info*/)
-    {
-        ++current_offset;
-        (*offsets)[i] = current_offset;
-
-        for (size_t j = 0; j < num_columns_to_add - 1; ++j)
-            added_columns[j]->insertDefault();
-        added_columns[num_columns_to_add - 1]->insert(FIELD_INT8_0);
-        return false;
-    }
-};
-
 template <ASTTableJoin::Kind KIND, typename Map>
 struct Adder<KIND, ASTTableJoin::Strictness::All, Map>
 {