Create Relational View got error: ORA-19276: XPST0005 - XPath step specifie

Question

Hi expert,
I am using Oracle 11.2.0.1.0 XML DB.
I am successfully registered schema and generated a table DOCUMENT.
I have succfully inserted 12 .xml files to this table.
SQL> SELECT OBJECT_VALUE FROM document;
OBJECT_VALUE
<?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet href="http://www.accessdata.fda.gov/spl/stylesheet/spl.xsl" type="text/xsl"?>
<document xmlns="urn:hl7-org:v3" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:hl7-org:v3 http://localhost:8080/home/DEV/xsd/spl.xsd">
<id root="03d6a2cd-fdda-4fe1-865d-da0db9212f34"/>
<code code="51725-0" codeSystem="2.16.840.1.113883.6.1" displayName="ESTABLISHMENT REGISTRATION"/>
</component>
</document>
then I tried to create a create Relational View base on one inserted .xml file I got error:
ERROR at line 3:
ORA-19276: XPST0005 - XPath step specifies an invalid element/attribute name: (document)
is there anyone know what was wrong?
Thanks a lot!
Cow
Edited by: Cow on Feb 15, 2011 8:58 PM
Edited by: Cow on Feb 21, 2011 6:59 AM

Answer 1

These kinds of issues, you will have to solve by joining multiple resultsets or passing fragments to the next XMLTABLE statement and building redundancy via the ORDINALITY clause (which results a NUMBER datatype)
For example
A "transaction" can have multiple "status"ses which can have multiple "reason"s
WITH XTABLE
AS
  (SELECT xmltype('<TRANSACTION>
                    <PFL_ID>123456789</PFL_ID>
                    <PMI_ID>1</PMI_ID><PII_ID>1</PII_ID>
                    <ID>1</ID>
                    <INSTR_ID>MARCO_003</INSTR_ID>
                    <E_TO_E_ID>MARCO_004</E_TO_E_ID>
                    <INSTD_AMT>10</INSTD_AMT>
                    <INSTD_AMT_CCY>EUR</INSTD_AMT_CCY>
                    <STATUS>
                        <PFL_ID>123456789</PFL_ID>
                        <PMI_ID>1</PMI_ID><PII_ID>1</PII_ID>
                        <TXI_ID>1</TXI_ID>
                        <ID>1</ID>
                        <PMT_TX_STS_UTC_DT>2011-02-15</PMT_TX_STS_UTC_DT>
                           <REASON>
                              <ID>1000</ID>
                              <STS_RSN_PRTRY>MG001</STS_RSN_PRTRY>
                           </REASON>
                           <REASON>
                              <ID>2000</ID>
                              <STS_RSN_PRTRY>IS000</STS_RSN_PRTRY>
                           </REASON>
                     </STATUS>
                  </TRANSACTION>') as XMLCOLUMN
  FROM DUAL
SELECT STS_ID             as STATUS_ID,
       STS_PFL_ID,
       STS_PMI_ID,
       STS_TXI_ID,
       RSN_ID             as REASON_ID,
       RSN_STS_RSN_PRTRY,
       RSN_XML_POS        as POSITION
FROM  XTABLE
,     XMLTABLE ('/TRANSACTION/STATUS'
                PASSING XMLCOLUMN
                COLUMNS
                    STS_PFL_ID         NUMBER(10)    path 'PFL_ID'
                  , STS_PMI_ID         NUMBER(10)    path 'PMI_ID'
                  , STS_TXI_ID         NUMBER(10)    path 'TXI_ID'
                  , STS_ID             VARCHAR2(10)  path 'ID'
                  , XML_REASONS        XMLTYPE       path 'REASON'
                  ) sts
,     XMLTABLE ('/REASON'
                PASSING sts.XML_REASONS
                COLUMNS
                    RSN_XML_POS        FOR ORDINALITY
                  , RSN_ID             VARCHAR2(10)  path 'ID'
                  , RSN_STS_RSN_PRTRY  VARCHAR2(10)  path 'STS_RSN_PRTRY'
                  ) rsnWill give you the following output (in your case DON"T forget to buildin the namespace references)
SQL> WITH XTABLE
  2  AS
  3   (SELECT xmltype('<TRANSACTION>
  4             <PFL_ID>123456789</PFL_ID>
  5             <PMI_ID>1</PMI_ID><PII_ID>1</PII_ID>
  6             <ID>1</ID>
  7             <INSTR_ID>MARCO_003</INSTR_ID>
  8             <E_TO_E_ID>MARCO_004</E_TO_E_ID>
  9             <INSTD_AMT>10</INSTD_AMT>
10             <INSTD_AMT_CCY>EUR</INSTD_AMT_CCY>
11            <STATUS>
12              <PFL_ID>123456789</PFL_ID>
13              <PMI_ID>1</PMI_ID><PII_ID>1</PII_ID>
14              <TXI_ID>1</TXI_ID>
15              <ID>1</ID>
16              <PMT_TX_STS_UTC_DT>2011-02-15</PMT_TX_STS_UTC_DT>
17                <REASON>
18                  <ID>1000</ID>
19                  <STS_RSN_PRTRY>MG001</STS_RSN_PRTRY>
20                </REASON>
21                <REASON>
22                   <ID>2000</ID>
23                   <STS_RSN_PRTRY>IS000</STS_RSN_PRTRY>
24                </REASON>
25              </STATUS>
26           </TRANSACTION>') as XMLCOLUMN
27   FROM DUAL
28   )
29  SELECT STS_ID             as STATUS_ID,
30         STS_PFL_ID,
31         STS_PMI_ID,
32         STS_TXI_ID,
33         RSN_ID             as REASON_ID,
34         RSN_STS_RSN_PRTRY,
35         RSN_XML_POS        as POSITION
36  FROM  XTABLE
37  ,     XMLTABLE ('/TRANSACTION/STATUS'
38                  PASSING XMLCOLUMN
39              COLUMNS
40                  STS_PFL_ID         NUMBER(10)    path 'PFL_ID'
41                , STS_PMI_ID         NUMBER(10)    path 'PMI_ID'
42                , STS_TXI_ID         NUMBER(10)    path 'TXI_ID'
43                , STS_ID             VARCHAR2(10)  path 'ID'
44                , XML_REASONS        XMLTYPE       path 'REASON'
45            ) sts
46  ,     XMLTABLE ('/REASON'
47                  PASSING sts.XML_REASONS
48              COLUMNS
49                  RSN_XML_POS        FOR ORDINALITY
50                , RSN_ID             VARCHAR2(10)  path 'ID'
51                , RSN_STS_RSN_PRTRY  VARCHAR2(10)  path 'STS_RSN_PRTRY'
52            ) rsn
53 ;
STATUS_ID  STS_PFL_ID STS_PMI_ID STS_TXI_ID REASON_ID  RSN_STS_RS   POSITION
1           123456789          1          1 1000       MG001               1
1           123456789          1          1 2000       IS000               2
2 rows selected.If I wouldn't have done that then I would have got your result which fails with your error:
- ORA-19279 - XQuery dynamic type mismatch: expected singleton sequence - got multi-item sequence
SQL> WITH XTABLE
  2  AS
  3   (SELECT xmltype('<TRANSACTION>
  4             <PFL_ID>123456789</PFL_ID>
  5             <PMI_ID>1</PMI_ID><PII_ID>1</PII_ID>
  6             <ID>1</ID>
  7             <INSTR_ID>MARCO_003</INSTR_ID>
  8             <E_TO_E_ID>MARCO_004</E_TO_E_ID>
  9             <INSTD_AMT>10</INSTD_AMT>
10             <INSTD_AMT_CCY>EUR</INSTD_AMT_CCY>
11            <STATUS>
12              <PFL_ID>123456789</PFL_ID>
13              <PMI_ID>1</PMI_ID><PII_ID>1</PII_ID>
14              <TXI_ID>1</TXI_ID>
15              <ID>1</ID>
16              <PMT_TX_STS_UTC_DT>2011-02-15</PMT_TX_STS_UTC_DT>
17                <REASON>
18                  <ID>1000</ID>
19                  <STS_RSN_PRTRY>MG001</STS_RSN_PRTRY>
20                </REASON>
21                <REASON>
22                   <ID>2000</ID>
23                   <STS_RSN_PRTRY>IS000</STS_RSN_PRTRY>
24                </REASON>
25              </STATUS>
26           </TRANSACTION>') as XMLCOLUMN
27   FROM DUAL
28   )
29  SELECT STS_ID             as STATUS_ID,
30         STS_PFL_ID,
31         STS_PMI_ID,
32         STS_TXI_ID,
33         RSN_ID             as REASON_ID,
34         RSN_STS_RSN_PRTRY
35  FROM  XTABLE
36  ,     XMLTABLE ('/TRANSACTION/STATUS'
37                  PASSING XMLCOLUMN
38              COLUMNS
39                  STS_PFL_ID         NUMBER(10)    path 'PFL_ID'
40                , STS_PMI_ID         NUMBER(10)    path 'PMI_ID'
41                , STS_TXI_ID         NUMBER(10)    path 'TXI_ID'
42                , STS_ID             VARCHAR2(10)  path 'ID'
43                , RSN_ID             VARCHAR2(10)  path 'REASON/ID'
44                , RSN_STS_RSN_PRTRY  VARCHAR2(10)  path 'REASON/STS_RSN_PRTRY'
45           ) rsn;
              </REASON>
ERROR at line 24:
ORA-19279: XQuery dynamic type mismatch: expected singleton sequence - got
multi-item sequenceHTH
Edited by: Marco Gralike on Feb 16, 2011 12:12 PM