diff --git a/src/sql/printer/ob_raw_expr_printer.cpp b/src/sql/printer/ob_raw_expr_printer.cpp
index a67acd87f..afd0a341d 100644
--- a/src/sql/printer/ob_raw_expr_printer.cpp
+++ b/src/sql/printer/ob_raw_expr_printer.cpp
@@ -4025,6 +4025,10 @@ int ObRawExprPrinter::print(ObWinFunRawExpr *expr)
         SET_SYMBOL_IF_EMPTY("variance");
       case T_FUN_APPROX_COUNT_DISTINCT:
         SET_SYMBOL_IF_EMPTY("approx_count_distinct");
+      case T_FUN_APPROX_COUNT_DISTINCT_SYNOPSIS:
+        SET_SYMBOL_IF_EMPTY("approx_count_distinct_synopsis");
+      case T_FUN_APPROX_COUNT_DISTINCT_SYNOPSIS_MERGE:
+        SET_SYMBOL_IF_EMPTY("approx_count_distinct_synopsis_merge");
       case T_FUN_KEEP_WM_CONCAT: {
         SET_SYMBOL_IF_EMPTY("wm_concat");
         DATA_PRINTF("%.*s(", LEN_AND_PTR(symbol));