diff --git a/src/sql/engine/dml/ob_table_update.h b/src/sql/engine/dml/ob_table_update.h
index aa3a6d78b85688bf6219db6b5ba1b4c478bd3e76..58ad37a5e2a725e44ab898439f61d7595a1683a4 100644
--- a/src/sql/engine/dml/ob_table_update.h
+++ b/src/sql/engine/dml/ob_table_update.h
@@ -52,7 +52,9 @@ public:
           part_key_(),
           part_row_cnt_(0),
           part_infos_(),
-          cur_part_idx_(0)
+          cur_part_idx_(0),
+          new_row_projector_(NULL),
+          new_row_projector_size_(0)
     {}
     ~ObTableUpdateCtx()
     {}