SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function round (children 1)
     ExpressionList (children 1)
      Function multiply (children 1)
       ExpressionList (children 2)
        Literal UInt64_1000
        Function ngramSearchCaseInsensitive (children 1)
         ExpressionList (children 2)
          Function materialize (children 1)
           ExpressionList (children 1)
            Literal \'\'
          Literal \'abc\'
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.numbers
   Literal UInt64_5
