From 4e668a5b06974afe45e7c6cbdb74e5c98297fae1 Mon Sep 17 00:00:00 2001
From: Alexander Kuzmenkov <akuzm@yandex-team.ru>
Date: Mon, 30 Mar 2020 23:41:29 +0300
Subject: [PATCH] fixup

---
 dbms/src/Interpreters/ActionsVisitor.cpp | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/dbms/src/Interpreters/ActionsVisitor.cpp b/dbms/src/Interpreters/ActionsVisitor.cpp
index b2091465be9..fd36cd27a0e 100644
--- a/dbms/src/Interpreters/ActionsVisitor.cpp
+++ b/dbms/src/Interpreters/ActionsVisitor.cpp
@@ -199,12 +199,15 @@ static String getUniqueName(const Block & block, const String & prefix)
 {
     auto result = prefix;
 
-    if (block.has(prefix))
+    if (block.has(result))
     {
         int i = 1;
-        while (block.has(prefix + toString(i)))
+        do
+        {
+            result = prefix + "_" + toString(i);
             ++i;
-        result = prefix + "_" + toString(i);
+        }
+        while (block.has(result));
     }
 
     return result;