From 7a23d8292f92bbb33a435bf794fc78e95b9919eb Mon Sep 17 00:00:00 2001
From: Nikita Mikhaylov <mikhaylovnikitka@gmail.com>
Date: Fri, 16 Apr 2021 20:24:33 +0300
Subject: [PATCH] done

---
 src/Processors/Formats/Impl/CSVRowInputFormat.cpp |  3 +++
 ...8_input_format_with_names_use_header.reference |  2 ++
 .../01818_input_format_with_names_use_header.sh   | 15 +++++++++++++++
 3 files changed, 20 insertions(+)
 create mode 100644 tests/queries/0_stateless/01818_input_format_with_names_use_header.reference
 create mode 100755 tests/queries/0_stateless/01818_input_format_with_names_use_header.sh

diff --git a/src/Processors/Formats/Impl/CSVRowInputFormat.cpp b/src/Processors/Formats/Impl/CSVRowInputFormat.cpp
index 00381ab96d0..4ccc0db4cfe 100644
--- a/src/Processors/Formats/Impl/CSVRowInputFormat.cpp
+++ b/src/Processors/Formats/Impl/CSVRowInputFormat.cpp
@@ -201,7 +201,10 @@ void CSVRowInputFormat::readPrefix()
             return;
         }
         else
+        {
             skipRow(in, format_settings.csv, num_columns);
+            setupAllColumnsByTableSchema();
+        }
     }
     else if (!column_mapping->is_set)
         setupAllColumnsByTableSchema();
diff --git a/tests/queries/0_stateless/01818_input_format_with_names_use_header.reference b/tests/queries/0_stateless/01818_input_format_with_names_use_header.reference
new file mode 100644
index 00000000000..b7b577c4685
--- /dev/null
+++ b/tests/queries/0_stateless/01818_input_format_with_names_use_header.reference
@@ -0,0 +1,2 @@
+testdata1
+testdata2
diff --git a/tests/queries/0_stateless/01818_input_format_with_names_use_header.sh b/tests/queries/0_stateless/01818_input_format_with_names_use_header.sh
new file mode 100755
index 00000000000..f4b2aa692ba
--- /dev/null
+++ b/tests/queries/0_stateless/01818_input_format_with_names_use_header.sh
@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+
+CUR_DIR=$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)
+# shellcheck source=../shell_config.sh
+. "$CUR_DIR"/../shell_config.sh
+
+${CLICKHOUSE_CLIENT_BINARY} -q "DROP TABLE IF EXISTS 01818_with_names;"
+
+${CLICKHOUSE_CLIENT_BINARY} -q "CREATE TABLE 01818_with_names (t String) ENGINE = MergeTree ORDER BY t;"
+
+echo -ne "t\ntestdata1\ntestdata2" | ${CLICKHOUSE_CLIENT_BINARY} --input_format_with_names_use_header 0 --query "INSERT INTO 01818_with_names FORMAT CSVWithNames"
+
+${CLICKHOUSE_CLIENT_BINARY} -q "SELECT * FROM 01818_with_names;"
+
+${CLICKHOUSE_CLIENT_BINARY} -q "DROP TABLE IF EXISTS 01818_with_names;"