dbms: better [#METR-11370].

dbms/include/DB/Interpreters/ExpressionAnalyzer.h

@@ -155,7 +155,7 @@ private:
 
 	void init();
 
-	static NamesAndTypesList::iterator findColumn(const String & name, const NamesAndTypesList & cols);
+	static NamesAndTypesList::iterator findColumn(const String & name, NamesAndTypesList & cols);
 	NamesAndTypesList::iterator findColumn(const String & name) { return findColumn(name, columns); }
 
 	void removeUnusedColumns();

dbms/src/Interpreters/ExpressionAnalyzer.cpp

@@ -141,7 +141,7 @@ void ExpressionAnalyzer::init()
 }
 
 
-NamesAndTypesList::iterator ExpressionAnalyzer::findColumn(const String & name, const NamesAndTypesList & cols)
+NamesAndTypesList::iterator ExpressionAnalyzer::findColumn(const String & name, NamesAndTypesList & cols)
 {
 	return std::find_if(cols.begin(), cols.end(),
 		[&](const NamesAndTypesList::value_type & val) { return val.first == name; });