From f54f55bbdcb5b13c2d8cbcd82e4944714ef8e616 Mon Sep 17 00:00:00 2001
From: root <root@server50-ke.mars.ljnode.com>
Date: Sat, 28 Sep 2019 00:38:13 +0800
Subject: [PATCH] Add const.

---
 dbms/src/Interpreters/InterpreterSelectQuery.cpp | 2 +-
 dbms/src/Interpreters/InterpreterSelectQuery.h   | 2 +-
 dbms/src/Interpreters/SyntaxAnalyzer.cpp         | 2 +-
 3 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/dbms/src/Interpreters/InterpreterSelectQuery.cpp b/dbms/src/Interpreters/InterpreterSelectQuery.cpp
index ce1e57d24d7..80ca4f5f29b 100644
--- a/dbms/src/Interpreters/InterpreterSelectQuery.cpp
+++ b/dbms/src/Interpreters/InterpreterSelectQuery.cpp
@@ -689,7 +689,7 @@ InterpreterSelectQuery::analyzeExpressions(
 }
 
 
-BlockInputStreamPtr InterpreterSelectQuery::createCheckNonEmptySetIfNeed(BlockInputStreamPtr stream, ExpressionActionsPtr expression)
+BlockInputStreamPtr InterpreterSelectQuery::createCheckNonEmptySetIfNeed(BlockInputStreamPtr stream, const ExpressionActionsPtr & expression) const
 {
     for (const auto & action : expression->getActions())
     {
diff --git a/dbms/src/Interpreters/InterpreterSelectQuery.h b/dbms/src/Interpreters/InterpreterSelectQuery.h
index 490f13df59e..6efe85de725 100644
--- a/dbms/src/Interpreters/InterpreterSelectQuery.h
+++ b/dbms/src/Interpreters/InterpreterSelectQuery.h
@@ -254,7 +254,7 @@ private:
     void initSettings();
 
     /// Whether you need to check if the set is empty before ExpressionActions is executed. Create a CheckNonEmptySetBlockInputStream if needed.
-    BlockInputStreamPtr createCheckNonEmptySetIfNeed(BlockInputStreamPtr stream, ExpressionActionsPtr expression);
+    BlockInputStreamPtr createCheckNonEmptySetIfNeed(BlockInputStreamPtr stream, const ExpressionActionsPtr & expression) const;
 
     const SelectQueryOptions options;
     ASTPtr query_ptr;
diff --git a/dbms/src/Interpreters/SyntaxAnalyzer.cpp b/dbms/src/Interpreters/SyntaxAnalyzer.cpp
index 97b93d4eac4..43f2bcac76f 100644
--- a/dbms/src/Interpreters/SyntaxAnalyzer.cpp
+++ b/dbms/src/Interpreters/SyntaxAnalyzer.cpp
@@ -615,7 +615,7 @@ std::vector<const ASTFunction *> getAggregates(const ASTPtr & query)
     return {};
 }
 
-void collectCanShortCircuitSet(ASTPtr & ast, NameSet & need_check_empty_sets)
+void collectCanShortCircuitSet(const ASTPtr & ast, NameSet & need_check_empty_sets)
 {
     if (const auto * function = ast->as<ASTFunction>())
     {