From 1520e727c6c27d4079742c466b719bb0ec4bf1d9 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ren=C3=A9=20Canna=C3=B2?= <rene.cannao@gmail.com>
Date: Tue, 26 Jul 2022 10:01:43 +0000
Subject: [PATCH] Allow compiling of clickhouse with old compiler

---
 .gitignore                | 1 +
 Makefile                  | 1 -
 lib/ClickHouse_Server.cpp | 4 ++++
 3 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/.gitignore b/.gitignore
index 45cf9fb40..884629807 100644
--- a/.gitignore
+++ b/.gitignore
@@ -123,6 +123,7 @@ deps/libhttpserver/libhttpserver-0.18.1/
 #clickhouse
 deps/clickhouse-cpp/clickhouse-cpp-*
 deps/cityhash/cityhash/
+deps/cityhash/config*
 deps/lz4/lz4-1.7.5/
 deps/lz4/lz4/
 
diff --git a/Makefile b/Makefile
index 07ab51858..802446afb 100644
--- a/Makefile
+++ b/Makefile
@@ -58,7 +58,6 @@ USERCHECK := $(shell getent passwd proxysql)
 GROUPCHECK := $(shell getent group proxysql)
 
 
-
 .PHONY: default
 default: build_deps build_lib build_src
 
diff --git a/lib/ClickHouse_Server.cpp b/lib/ClickHouse_Server.cpp
index 4c6a9aaa9..c807b0b9c 100644
--- a/lib/ClickHouse_Server.cpp
+++ b/lib/ClickHouse_Server.cpp
@@ -98,7 +98,11 @@ inline void ClickHouse_to_MySQL(const Block& block) {
 				is_null = 0;
 			} else {
 				auto s_t = bi.Column()->As<ColumnNullable>();
+#ifdef CXX17
 				cc = s_t->Nested()->GetType().GetCode();
+#else
+				cc = s_t->Type()->GetNestedType()->GetCode();
+#endif // CXX17
 			}
 
 			if (cc >= clickhouse::Type::Code::Int8 && cc <= clickhouse::Type::Code::Float64) {