From d274d4a5793db343d6289f619bd01b4332d813fa Mon Sep 17 00:00:00 2001
From: Nikita Vasilev <vasnikserg@yandex.ru>
Date: Wed, 5 May 2021 00:36:30 +0300
Subject: [PATCH] fix

---
 src/Interpreters/TreeCNFConverter.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Interpreters/TreeCNFConverter.cpp b/src/Interpreters/TreeCNFConverter.cpp
index fac3007f394..2824c088f15 100644
--- a/src/Interpreters/TreeCNFConverter.cpp
+++ b/src/Interpreters/TreeCNFConverter.cpp
@@ -98,7 +98,7 @@ void pushOr(ASTPtr & query)
         {
             auto & child = or_func->arguments->children[i];
             auto * and_func = child->as<ASTFunction>();
-            if (and_func->name == "and")
+            if (and_func && and_func->name == "and")
             {
                 and_node_id = i;
             }