diff --git a/storage/tianchi/tse_srv.h b/storage/tianchi/tse_srv.h
index 1922adb1f909fc6056e8dfde6476a260a84ab026..a4a68b969327c8f1019ac889072198d72bf76b14 100644
--- a/storage/tianchi/tse_srv.h
+++ b/storage/tianchi/tse_srv.h
@@ -127,7 +127,6 @@ typedef struct {
 typedef struct {
     uint32_t total_rows;
     uint32_t num_buckets;
-    uint32_t num_distinct;
     uint32_t num_null;
     double density;
     tse_cbo_hist_type_t hist_type;