diff --git a/core/src/db/meta/MetaTypes.h b/core/src/db/meta/MetaTypes.h
index c6a6b6ae87..c973f3fdea 100644
--- a/core/src/db/meta/MetaTypes.h
+++ b/core/src/db/meta/MetaTypes.h
@@ -41,11 +41,6 @@ using DateT = int;
 const DateT EmptyDate = -1;
 using DatesT = std::vector<DateT>;
 
-struct DateRange {
-    DateT start_date_ = 0x1 << 32;
-    DateT end_date_ = 0;
-};
-
 struct TableSchema {
     typedef enum {
         NORMAL,
diff --git a/core/src/index/knowhere/knowhere/index/vector_index/IndexIVFSQHybrid.cpp b/core/src/index/knowhere/knowhere/index/vector_index/IndexIVFSQHybrid.cpp
index 268b7fb9e3..45ef51c62a 100644
--- a/core/src/index/knowhere/knowhere/index/vector_index/IndexIVFSQHybrid.cpp
+++ b/core/src/index/knowhere/knowhere/index/vector_index/IndexIVFSQHybrid.cpp
@@ -256,8 +256,14 @@ void
 IVFSQHybrid::UnsetQuantizer() {
 }
 
-void
+VectorIndexPtr
 IVFSQHybrid::LoadData(const knowhere::QuantizerPtr& q, const Config& conf) {
+    return nullptr;
+}
+
+std::pair<VectorIndexPtr, QuantizerPtr>
+IVFSQHybrid::CopyCpuToGpuWithQuantizer(const int64_t& device_id, const Config& config) {
+    KNOWHERE_THROW_MSG("Not yet implemented");
 }
 
 IndexModelPtr