Delete Empty tag from xmltype oracle - sql

Question

i want try to delete the empty tag from xmltype. I Have generate the below xml from oracle type. In the collection few elements does not have values so i generated with empty tag.
Can any one please help me out:
Actual output:
<MESSAGE>
<LOCATIONS>
<LOCATION_ID>9999</LOCATION_ID>
<LOC_TYPE>S</LOC_TYPE>
<NAME>Test Location</NAME>
<PHONE_NUM>08 </PHONE_NUM>
<LAST_MODIFIED_BY/>
<LAST_MODIFIED_DATE/>
<POS_CODE/>
</LOCATIONS>
</MESSAGE>
Expected output:
<MESSAGE>
<LOCATIONS>
<LOCATION_ID>9999</LOCATION_ID>
<LOC_TYPE>S</LOC_TYPE>
<NAME>Test Location</NAME>
<PHONE_NUM>08 </PHONE_NUM>
</LOCATIONS>
</MESSAGE>

Answer 1

Use DELETEXML and look for the XPath //*[not(text())][not(*)] to find elements that contain no text and no children:
SQL Fiddle
Oracle 11g R2 Schema Setup:
CREATE TABLE table_name ( xml ) AS
SELECT XMLTYPE( '<MESSAGE>
<LOCATIONS>
<LOCATION_ID>9999</LOCATION_ID>
<LOC_TYPE>S</LOC_TYPE>
<NAME>Test Location</NAME>
<PHONE_NUM>08 </PHONE_NUM>
<LAST_MODIFIED_BY/>
<LAST_MODIFIED_DATE/>
<POS_CODE/>
</LOCATIONS>
</MESSAGE>' ) FROM DUAL;
Query 1:
SELECT DELETEXML(
xml,
'//*[not(text())][not(*)]'
).getStringVal()
FROM table_name
Results:
| DELETEXML(XML,'//*[NOT(TEXT())][NOT(*)]').GETSTRINGVAL() |
|-----------------------------------------------------------------------------------------------------------------------------------------------------|
| <MESSAGE><LOCATIONS><LOCATION_ID>9999</LOCATION_ID><LOC_TYPE>S</LOC_TYPE><NAME>Test Location</NAME><PHONE_NUM>08 </PHONE_NUM></LOCATIONS></MESSAGE> |

Answer 2

SELECT
deletexml(xml_data, '//*[not(text())][not(*)]').getstringval()
FROM
(
SELECT
xmltype('<MESSAGE>
<LOCATIONS>
<LOCATION_ID>9999</LOCATION_ID>
<LOC_TYPE>S</LOC_TYPE>
<NAME>Test Location</NAME>
<PHONE_NUM>08 </PHONE_NUM>
<LAST_MODIFIED_BY/>
<LAST_MODIFIED_DATE/>
<POS_CODE/>
</LOCATIONS>
</MESSAGE>'
) xml_data
FROM
dual
)
this is working fine thanks