DeleteQuery  t (children 2)
 Function in (children 1)
  ExpressionList (children 2)
   Identifier y
   Subquery (children 1)
    SelectWithUnionQuery (children 1)
     ExpressionList (children 1)
      SelectQuery (children 2)
       ExpressionList (children 1)
        Identifier y
       TablesInSelectQuery (children 1)
        TablesInSelectQueryElement (children 1)
         TableExpression (children 1)
          TableIdentifier t
 Identifier t
