SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 3)
    Identifier number
    Function lagInFrame (children 1)
     ExpressionList (children 3)
      Function toNullable (children 1)
       ExpressionList (children 1)
        Identifier number
      Literal UInt64_2
      Literal NULL
    Function lagInFrame (children 1)
     ExpressionList (children 3)
      Identifier number
      Literal UInt64_2
      Literal UInt64_1
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function numbers (children 1)
       ExpressionList (children 1)
        Literal UInt64_10
   ExpressionList (children 1)
    WindowListElement