SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function equals (children 1)
     ExpressionList (children 2)
      Literal Array_[UInt64_1, UInt64_1, UInt64_2, UInt64_3, UInt64_4, UInt64_5, UInt64_0, UInt64_0, UInt64_0, UInt64_0]
      Function groupArray (children 1)
       ExpressionList (children 1)
        Function position (children 1)
         ExpressionList (children 3)
          Function materialize (children 1)
           ExpressionList (children 1)
            Literal \'aaaa\'
          Function materialize (children 1)
           ExpressionList (children 1)
            Literal \'\'
          Identifier number
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function numbers (children 1)
       ExpressionList (children 1)
        Literal UInt64_10