From f301e60ef5690b34156ace73d0d3d1a0327ad050 Mon Sep 17 00:00:00 2001
From: Nikolai Kochetov <nik-kochetov@yandex-team.ru>
Date: Tue, 26 Nov 2019 13:14:56 +0300
Subject: [PATCH] Fix InterpreterSelectWithUnionQuery::getCommonHeaderForUnion

---
 dbms/src/Columns/getLeastSuperColumn.cpp                  | 2 +-
 dbms/src/Columns/getLeastSuperColumn.h                    | 2 +-
 dbms/src/Interpreters/InterpreterSelectWithUnionQuery.cpp | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/dbms/src/Columns/getLeastSuperColumn.cpp b/dbms/src/Columns/getLeastSuperColumn.cpp
index 11c5b1b58f..663337b6f8 100644
--- a/dbms/src/Columns/getLeastSuperColumn.cpp
+++ b/dbms/src/Columns/getLeastSuperColumn.cpp
@@ -18,7 +18,7 @@ static bool sameConstants(const IColumn & a, const IColumn & b)
     return assert_cast<const ColumnConst &>(a).getField() == assert_cast<const ColumnConst &>(b).getField();
 }
 
-ColumnWithTypeAndName getLeastSuperColumn(std::vector<const ColumnWithTypeAndName *> columns)
+ColumnWithTypeAndName getLeastSuperColumn(const std::vector<const ColumnWithTypeAndName *> & columns)
 {
     if (columns.empty())
         throw Exception("Logical error: no src columns for supercolumn", ErrorCodes::LOGICAL_ERROR);
diff --git a/dbms/src/Columns/getLeastSuperColumn.h b/dbms/src/Columns/getLeastSuperColumn.h
index d761de29a9..cd8dc53a89 100644
--- a/dbms/src/Columns/getLeastSuperColumn.h
+++ b/dbms/src/Columns/getLeastSuperColumn.h
@@ -7,6 +7,6 @@ namespace DB
 {
 
 /// getLeastSupertype + related column changes
-ColumnWithTypeAndName getLeastSuperColumn(std::vector<const ColumnWithTypeAndName *> columns);
+ColumnWithTypeAndName getLeastSuperColumn(const std::vector<const ColumnWithTypeAndName *> & columns);
 
 }
diff --git a/dbms/src/Interpreters/InterpreterSelectWithUnionQuery.cpp b/dbms/src/Interpreters/InterpreterSelectWithUnionQuery.cpp
index 93916db4a1..2d7fde7287 100644
--- a/dbms/src/Interpreters/InterpreterSelectWithUnionQuery.cpp
+++ b/dbms/src/Interpreters/InterpreterSelectWithUnionQuery.cpp
@@ -126,7 +126,7 @@ Block InterpreterSelectWithUnionQuery::getCommonHeaderForUnion(const Blocks & he
                             ErrorCodes::UNION_ALL_RESULT_STRUCTURES_MISMATCH);
     }
 
-    std::vector<const ColumnWithTypeAndName *> columns(num_columns);
+    std::vector<const ColumnWithTypeAndName *> columns(num_selects);
 
     for (size_t column_num = 0; column_num < num_columns; ++column_num)
     {
-- 
GitLab