Removed extra quoting from Settings

dbms/src/Core/Settings.h

@@ -302,7 +302,7 @@ struct Settings : public SettingsCollection<Settings>
     M(SettingChar, format_csv_delimiter, ',', "The character to be considered as a delimiter in CSV data. If setting with a string, a string has to have a length of 1.") \
     M(SettingBool, format_csv_allow_single_quotes, 1, "If it is set to true, allow strings in single quotes.") \
     M(SettingBool, format_csv_allow_double_quotes, 1, "If it is set to true, allow strings in double quotes.") \
-    M(SettingBool, input_format_csv_unquoted_null_literal_as_null, false, "Consider unquoted NULL literal as \N") \
+    M(SettingBool, input_format_csv_unquoted_null_literal_as_null, false, "Consider unquoted NULL literal as \\N") \
     \
     M(SettingDateTimeInputFormat, date_time_input_format, FormatSettings::DateTimeInputFormat::Basic, "Method to read DateTime from text input formats. Possible values: 'basic' and 'best_effort'.") \
     M(SettingBool, log_profile_events, true, "Log query performance statistics into the query_log and query_thread_log.") \

dbms/src/Core/SettingsCommon.h

@@ -695,7 +695,7 @@ public:
 
 #define IMPLEMENT_SETTINGS_COLLECTION_ADD_MUTABLE_MEMBER_INFO_HELPER_(TYPE, NAME, DEFAULT, DESCRIPTION) \
     add({[](const Derived & d) { return d.NAME.changed; },          \
-         StringRef(#NAME, strlen(#NAME)), StringRef(#DESCRIPTION, strlen(#DESCRIPTION)), true, \
+         StringRef(#NAME, strlen(#NAME)), StringRef(DESCRIPTION, strlen(DESCRIPTION)), true, \
          &Functions::NAME##_getString, &Functions::NAME##_getField, \
          &Functions::NAME##_setString, &Functions::NAME##_setField, \
          &Functions::NAME##_serialize, &Functions::NAME##_deserialize, \
@@ -703,7 +703,7 @@ public:
 
 #define IMPLEMENT_SETTINGS_COLLECTION_ADD_IMMUTABLE_MEMBER_INFO_HELPER_(TYPE, NAME, DEFAULT, DESCRIPTION) \
     add({[](const Derived & d) { return d.NAME.changed; },              \
-        StringRef(#NAME, strlen(#NAME)), StringRef(#DESCRIPTION, strlen(#DESCRIPTION)), false, \
+        StringRef(#NAME, strlen(#NAME)), StringRef(DESCRIPTION, strlen(DESCRIPTION)), false, \
         &Functions::NAME##_getString, &Functions::NAME##_getField, \
         &Functions::NAME##_setString, &Functions::NAME##_setField, \
         &Functions::NAME##_serialize, &Functions::NAME##_deserialize, \