InsertQuery   (children 2)
 Identifier adaptive_spill_03277_1
 SelectWithUnionQuery (children 1)
  ExpressionList (children 1)
   SelectQuery (children 2)
    ExpressionList (children 2)
     Function CAST (alias k) (children 1)
      ExpressionList (children 2)
       Function rand (children 1)
        ExpressionList
       Literal \'String\'
     Function CAST (alias x) (children 1)
      ExpressionList (children 2)
       Function rand (children 1)
        ExpressionList
       Literal \'String\'
    TablesInSelectQuery (children 1)
     TablesInSelectQueryElement (children 1)
      TableExpression (children 1)
       Function numbers (children 1)
        ExpressionList (children 1)
         Literal UInt64_1000000
