From a89e3df40a42514e3eea183eb7e121fa12ab28e8 Mon Sep 17 00:00:00 2001
From: Amos Bird <amosbird@gmail.com>
Date: Tue, 6 Apr 2021 21:08:29 +0800
Subject: [PATCH] Disable table function view in expression (#21465)

---
 src/Parsers/ASTFunction.cpp                               | 8 ++++++++
 .../queries/0_stateless/01715_table_function_view_fix.sql | 2 ++
 2 files changed, 10 insertions(+)

diff --git a/src/Parsers/ASTFunction.cpp b/src/Parsers/ASTFunction.cpp
index 3cb2e8bfa37..95d668dc8b6 100644
--- a/src/Parsers/ASTFunction.cpp
+++ b/src/Parsers/ASTFunction.cpp
@@ -15,8 +15,16 @@
 namespace DB
 {
 
+namespace ErrorCodes
+{
+    extern const int UNEXPECTED_EXPRESSION;
+}
+
 void ASTFunction::appendColumnNameImpl(WriteBuffer & ostr) const
 {
+    if (name == "view")
+        throw Exception("Table function view cannot be used as an expression", ErrorCodes::UNEXPECTED_EXPRESSION);
+
     writeString(name, ostr);
 
     if (parameters)
diff --git a/tests/queries/0_stateless/01715_table_function_view_fix.sql b/tests/queries/0_stateless/01715_table_function_view_fix.sql
index de5150b7b70..b96609391b5 100644
--- a/tests/queries/0_stateless/01715_table_function_view_fix.sql
+++ b/tests/queries/0_stateless/01715_table_function_view_fix.sql
@@ -1 +1,3 @@
 SELECT view(SELECT 1); -- { clientError 62 }
+
+SELECT sumIf(dummy, dummy) FROM remote('127.0.0.{1,2}', numbers(2, 100), view(SELECT CAST(NULL, 'Nullable(UInt8)') AS dummy FROM system.one)); -- { serverError 183 }