From 21c76a3d63be6ccdcbf86ad664714cade4b6afd1 Mon Sep 17 00:00:00 2001
From: Ivan Blinkov <github@blinkov.ru>
Date: Thu, 6 Dec 2018 17:40:32 +0300
Subject: [PATCH] Make if function name case-insensive #3704

---
 dbms/src/Functions/if.cpp                                       | 2 +-
 .../0_stateless/00765_sql_compatibility_aliases.reference       | 1 +
 .../queries/0_stateless/00765_sql_compatibility_aliases.sql     | 1 +
 3 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/dbms/src/Functions/if.cpp b/dbms/src/Functions/if.cpp
index 5879e45c810..42e8b65eb05 100644
--- a/dbms/src/Functions/if.cpp
+++ b/dbms/src/Functions/if.cpp
@@ -936,7 +936,7 @@ public:
 
 void registerFunctionIf(FunctionFactory & factory)
 {
-    factory.registerFunction<FunctionIf>();
+    factory.registerFunction<FunctionIf>(FunctionFactory::CaseInsensitive);
 }
 
 }
diff --git a/dbms/tests/queries/0_stateless/00765_sql_compatibility_aliases.reference b/dbms/tests/queries/0_stateless/00765_sql_compatibility_aliases.reference
index 152c2182d69..f774720f9ff 100644
--- a/dbms/tests/queries/0_stateless/00765_sql_compatibility_aliases.reference
+++ b/dbms/tests/queries/0_stateless/00765_sql_compatibility_aliases.reference
@@ -7,3 +7,4 @@ baz
 fo
 oo
 o
+1
diff --git a/dbms/tests/queries/0_stateless/00765_sql_compatibility_aliases.sql b/dbms/tests/queries/0_stateless/00765_sql_compatibility_aliases.sql
index 85b33efa485..c7ce18d2b45 100644
--- a/dbms/tests/queries/0_stateless/00765_sql_compatibility_aliases.sql
+++ b/dbms/tests/queries/0_stateless/00765_sql_compatibility_aliases.sql
@@ -9,3 +9,4 @@ select Locate('foo', 'o');
 select SUBSTRING('foo', 1, 2);
 select Substr('foo', 2);
 select mid('foo', 3);
+select IF(3>2, 1, 0);