Fix scalars for MV.

src/DataStreams/PushingToViewsBlockOutputStream.cpp

@@ -93,6 +93,10 @@ PushingToViewsBlockOutputStream::PushingToViewsBlockOutputStream(
         views.emplace_back(ViewInfo{std::move(query), database_table, std::move(out)});
     }
 
+    /// Remove calculated scalar subquery results, because they can be calculated for real, not substituted tables.
+    if (views_context->hasQueryContext())
+        views_context->getQueryContext().dropScalars();
+
     /// Do not push to destination table if the flag is set
     if (!no_destination)
     {

src/Interpreters/Context.cpp

@@ -885,6 +885,12 @@ bool Context::hasScalar(const String & name) const
 }
 
 
+void Context::dropScalars()
+{
+    scalars.clear();
+}
+
+
 StoragePtr Context::executeTableFunction(const ASTPtr & table_expression)
 {
     /// Slightly suboptimal.

src/Interpreters/Context.h

@@ -330,6 +330,7 @@ public:
     const Block & getScalar(const String & name) const;
     void addScalar(const String & name, const Block & block);
     bool hasScalar(const String & name) const;
+    void dropScalars();
 
     StoragePtr executeTableFunction(const ASTPtr & table_expression);