From f087f0e87733eeb2672dc989e792f3c85d462601 Mon Sep 17 00:00:00 2001
From: Kruglov Pavel <48961922+Avogar@users.noreply.github.com>
Date: Tue, 11 Apr 2023 14:18:16 +0200
Subject: [PATCH] Update src/Formats/ReadSchemaUtils.cpp

---
 src/Formats/ReadSchemaUtils.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/Formats/ReadSchemaUtils.cpp b/src/Formats/ReadSchemaUtils.cpp
index d185b938ed6..f80d9ee41d2 100644
--- a/src/Formats/ReadSchemaUtils.cpp
+++ b/src/Formats/ReadSchemaUtils.cpp
@@ -203,6 +203,7 @@ ColumnsDescription readSchemaFromFormat(
             ErrorCodes::BAD_ARGUMENTS,
             "{} file format doesn't support schema inference. You must specify the structure manually",
             format_name);
+    /// Some formats like CSVWithNames can contain empty column names. We don't support empty column names and futher processing can fail with an exception. Let's just remove columns with empty names from the structure.
     names_and_types.erase(
         std::remove_if(names_and_types.begin(), names_and_types.end(), [](const NameAndTypePair & pair) { return pair.name.empty(); }),
         names_and_types.end());