SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 2)
   ExpressionList (children 1)
    Function hex (children 1)
     ExpressionList (children 1)
      Function sipHash128ReferenceKeyed (children 1)
       ExpressionList (children 2)
        Identifier key
        Identifier val
   TablesInSelectQuery (children 1)
    TablesInSelectQueryElement (children 1)
     TableExpression (children 1)
      TableIdentifier tab
