Oracle XMLQuery
Version 12.1.0.2

General Information
Library Note Morgan's Library Page Footer
The Library is currently in the process of being upgraded from Oracle Database Version 11.2.0.3 to 12.1.0.1. Demos are being upgraded to reflect the new Container paradigm as well as EBR (Edition Based Redefinition) and may contain references to CDBs, PDBs, and other objects you may not be familiar with such as CDB_OBJECTS_AE: Welcome to 12c.
Returns query results as XML. XMLTable returns results as relation data.
 
Demo Setup
Table DDL CREATE TABLE person_data (
person_id   NUMBER(3),
person_data XMLTYPE);
Demo Data INSERT INTO person_data
(person_id, person_data)
VALUES
(1, XMLTYPE('<PDRecord>
     <PDName>Daniel Morgan</PDName>
     <PDDOB>12/1/1951</PDDOB>
     <PDEmail>damorgan@u.washington.edu</PDEmail>
 </PDRecord>')
);

INSERT INTO person_data
(person_id, person_data)
VALUES
(2, XMLTYPE('<PDRecord>
     <PDName>Taner Poder</PDName>
     <PDDOB>5/17/1949</PDDOB>
     <PDEmail>damorgan@u.washington.edu</PDEmail>
   </PDRecord>')
);

INSERT INTO person_data
(person_id, person_data)
VALUES
(3, XMLTYPE('<PDRecord>
     <PDName>Caleb Small</PDName>
     <PDDOB>1/1/1960</PDDOB>
     <PDEmail>damorgan@u.washington.edu</PDEmail>
 </PDRecord>')
);

COMMIT;

col person_data format a50

SELECT * FROM person_data;

set long 100000

SELECT * FROM person_data;
 
SELECT
Simple Query (with equals) SELECT <column_list>, XMLQuery (
'for $i IN <record_end_tag>
 where $i<item_end_tag> = <value>
 order by $i<item_end_tag>
 return $i<item_end_tag>
PASSING BY VALUE <xml_record_column>
RETURNING CONTENTS) <returning_column_alias>
FROM <table_name>;

Note: What is within the parentheses is case sensitive and you can not use Upper Case or InitCap for commands.
SELECT person_id, XMLQuery('for $i in /PDRecord
 where $i /PDName = "Daniel Morgan"
 order by $i/PDName
 return $i/PDName'
passing by value person_data
RETURNING CONTENT) XMLData
FROM person_data;

SELECT person_id, XMLQuery (
'for $i in /PDRecord
 where $i /PDName eq "Daniel Morgan"
 order by $i/PDName
 return $i/PDName'
passing by value person_data
RETURNING CONTENT) XMLData
FROM person_data;
Greater Than SELECT person_id, XMLQuery (
'for $i in /PDRecord
 where $i /PDName > "Daniel Morgan"
 order by $i/PDName
 return $i/PDName'
passing by value person_data
RETURNING CONTENT) XMLData
FROM person_data;

SELECT person_id, XMLQuery (
'for $i in /PDRecord
 where $i /PDName gt "Daniel Morgan"
 order by $i/PDName
 return $i/PDName'
passing by value person_data
RETURNING CONTENT) XMLData
FROM person_data;
Greater Than Or Equal To SELECT person_id, XMLQuery (
'for $i in /PDRecord
 where $i /PDName >= "Daniel Morgan"
 order by $i/PDName
 return $i/PDName'
passing by value person_data
RETURNING CONTENT) XMLData
FROM person_data;

SELECT person_id, XMLQuery (
'for $i in /PDRecord
 where $i /PDName ge "Daniel Morgan"
 order by $i/PDName
 return $i/PDName'
passing by value person_data
RETURNING CONTENT) XMLData
FROM person_data;
Less Than SELECT person_id, XMLQuery (
'for $i in /PDRecord
 where $i /PDName < "Daniel Morgan"
 order by $i/PDName
 return $i/PDName'
passing by value person_data
RETURNING CONTENT) XMLData
FROM person_data;

SELECT person_id, XMLQuery (
'for $i in /PDRecord
 where $i /PDName lt "Daniel Morgan"
 order by $i/PDName
 return $i/PDName'
passing by value person_data
RETURNING CONTENT) XMLData
FROM person_data;
Less Than Or Equal To SELECT person_id, XMLQuery (
'for $i in /PDRecord
 where $i /PDName >= "Daniel Morgan"
 order by $i/PDName
 return $i/PDName'
passing by value person_data
RETURNING CONTENT) XMLData
FROM person_data;

SELECT person_id, XMLQuery (
'for $i in /PDRecord
 where $i /PDName le "Daniel Morgan"
 order by $i/PDName
 return $i/PDName'
passing by value person_data
RETURNING CONTENT) XMLData
FROM person_data;
Not Equals SELECT person_id, XMLQuery (
'for $i in /PDRecord
 where $i /PDName != "Daniel Morgan"
 order by $i/PDName
 return $i/PDName'
passing by value person_data
RETURNING CONTENT) XMLData
FROM person_data;

SELECT person_id, XMLQuery (
'for $i in /PDRecord
 where $i /PDName ne "Daniel Morgan"
 order by $i/PDName
 return $i/PDName'
passing by value person_data
RETURNING CONTENT) XMLData
FROM person_data;
Additional Syntax Elements
[ // div union <CastAs>
- >> * intersect <CastableAs>
+ and idiv <EOF>
| or mod <InstanceOf>
except is to <TreatAs>

Related Topics
DBMS_XMLGEN
XML Functions
XMLTable
XML Tables

Morgan's Library Page Footer
This site is maintained by Dan Morgan. Last Updated: This site is protected by copyright and trademark laws under U.S. and International law. © 1998-2014 Daniel A. Morgan All Rights Reserved