Nested calls to XMLAgg

I would like to generate arbitrarily deeply nested XML documents by some declarative mechanism. I've looked at SQL/XML for the first time today, and in particular the XMLAgg function. Whereas I can use this for one level of group-by and hence one level of nesting of the returned document, can I use it at a deeper level of nesting? So if I have (say) four tables A,B,C,D that form a natural containment hierarchy via foreign keys, can I use XMLAgg to generate an XML hierarchy where D is nested in C, C in B, B in A etc? Or is the only mechanism to use Oracle nested tables?

OK, found it page 10.52 of the dev guide (Part No. A96620-02, the one that has 1044 pages).
Looks like you need all your brain to write something like these queries...

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    ORA-06550: line 49, column 33:
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    Nitin

    I think I confused you. The 'pre' tags are for this Oracle Forum ( not your code). If your code was formatted we can look at it better .
    For example, I have put your code in those tags(you won't see them), they are for the forum software to process.
    See, how I didn't lose the formatting?
    DECLARE
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                             xmlelement("hndlTypeCode", d.hndl_type_c),
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                                        NVL(d.mstr_item_type_c, '00')),
                             xmlelement("sszCode", d.reg_ssz_excpt_c),
                             xmlelement("agriFlag", NVL(d.agrl_f, 'N')),
                             xmlelement("itemRankCode", d.item_rank_c),
                             xmlelement("hazardFlag", NVL(d.hazd_mtrl_f, 'N')),
                             xmlelement("createDate",
                                        to_char(d.create_d, 'MM-DD-YYYY HH24:MI:SS')),
                             xmlelement("updateDate",
                                        to_char(d.modf_ts, 'MM-DD-YYYY HH24:MI:SS')),
                             xmlelement("actvnDate",
                                        to_char(d.actvn_d, 'MM-DD-YYYY HH24:MI:SS')),
                             xmlelement("organicCode", d.ognc_c),
                             xmlelement("lotCntlFlag", NVL(d.lot_cntl_f, 'N')),
                             xmlelement("flammableFlag", NVL(d.flam_c, 'N')),
                             xmlelement("recordMode", c.action_c),
                             xmlelement("areaType", p1_test),
                             xmlelement("uoms",
                                        xmlelement("uom",
                                                   xmlelement("prodUOM", p1_test),
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                                                   xmlelement("consldtRule", p1_test),
                                                   xmlelement("unitWtQty",
                                                              NVL(d.unit_wt_q, 1)),
                                                   xmlelement("vcpHeightQty",
                                                              NVL(d.vcp_ht_q, 1)),
                                                   xmlelement("vcpWidthQty",
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                                                   xmlelement("vcpLengthQty",
                                                              NVL(d.vcp_lgth_q, 1)),
                                                   xmlelement("layerQty", p1_test))),
                             (SELECT xmlelement("aliases",
                                                xmlagg(xmlelement("upcCode",
                                                                  trunc(b.bar_code_i))
                                                       ORDER BY b.dept_i,
                                                       b.class_i,
                                                       b.item_i))
                                FROM dc_item_bar_code b, dc_item a
                               WHERE a.dept_i = b.dept_i
                                 AND a.class_i = b.class_i
                                 AND a.item_i = b.item_i
                                 AND a.dept_i = c.dept_i
                                 AND a.class_i = c.class_i
                                 AND a.item_i = c.item_i)) AS VARCHAR2(4000))
        INTO x
        FROM dc_item d, item_wm_trigger_w c
       WHERE d.dept_i = c.dept_i
         AND d.class_i = c.class_i
         AND d.item_i = c.item_i;
    END;
    /

  • Error messages when calling RSDRI_INFOPROV_READ for more than one time

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              i_t_range              = gt_range
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                         i_packagesize          = 100000
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                         illegal_input_sfk      = 3
                         illegal_input_range    = 4
                         illegal_input_tablesel = 5
                         no_authorization       = 6
                         ncum_not_supported     = 7
                         illegal_download       = 8
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