CreateQuery t_create_as_tuple (children 3)
 Identifier t_create_as_tuple
 Storage definition (children 2)
  Function MergeTree (children 1)
   ExpressionList
  Identifier number
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 2)
    ExpressionList (children 2)
     Identifier number
     Function array (alias array) (children 1)
      ExpressionList (children 1)
       Function tuple (children 1)
        ExpressionList (children 2)
         Literal \'string\'
         Identifier number
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       Function numbers (children 1)
        ExpressionList (children 1)
         Literal UInt64_3