SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function replaceRegexpAll (children 1)
     ExpressionList (children 3)
      Function materialize (children 1)
       ExpressionList (children 1)
        Function toFixedString (children 1)
         ExpressionList (children 2)
          Function toLowCardinality (children 1)
           ExpressionList (children 1)
            Function concat (children 1)
             ExpressionList (children 2)
              Literal \'z\'
              Identifier number
          Literal UInt64_2
      Literal \'\'
      Literal \'aazzqa\'
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      Function numbers (children 1)
       ExpressionList (children 1)
        Literal UInt64_10
