CreateQuery mv2 (children 3)
 Identifier mv2
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 3)
    ExpressionList (children 2)
     Identifier key
     Function count (alias value) (children 1)
      ExpressionList (children 1)
       Identifier value
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       TableIdentifier d6
    ExpressionList (children 1)
     Identifier key
 ViewTargets (children 1)
  Storage definition (children 2)
   Function SummingMergeTree
   Identifier key
