SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 3)
   ExpressionList (children 1)
    Function transform (children 1)
     ExpressionList (children 4)
      Function toString (children 1)
       ExpressionList (children 1)
        Identifier number
      Literal Array_[\'3\', \'5\', \'7\']
      Literal Array_[\'hello\', \'world\', \'abc\']
      Literal \'-\'
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier system.numbers
   Literal UInt64_10