Query for extract string from xml in sql - sql

Question

In SQL Server 2012, I have a table DEFINITIONS and a column in it that value of it is XML and name of column is "XML". I want to extract string "[CDATA[xxxx]]" from XML column (in parameter tag). how can I do that?
XML Example value:
<CatalogItem subType="0" type="82">
<id>7c75be9f-d490-4ff5-81ed-064349f4efde</id>
<name>Test White</name>
<description />
<attributes>0</attributes>
<parameters><conditions><condition grouping="or"><prop-key>usb_device_serial_number</prop-key><op-key>equals</op-key><value><![CDATA[gdefgd||]]></value></condition></conditions></parameters>
<customParameterNames />
<enforceProducts>
<Product type="WIN" />
</enforceProducts>
</CatalogItem>
Update 1
This Query solve my problem:
if object_id('dbo.cdata') is not null drop table dbo.cdata;
create table dbo.cdata(
x xml
);
insert into dbo.cdata(x)
SELECT XML FROM [HQ-MC-SRV-01].[dbo].[DEFINITIONS]
select
xv.v.value('.', 'nvarchar(max)') as cdata
from dbo.cdata
cross apply
cdata.x.nodes(
'//parameters'
) as pp(p)
cross apply (
values(
cast(pp.p.value(
'.', 'nvarchar(max)'
) as xml)
)
) as xp(p)
cross apply
xp.p.nodes('//value') as xv(v)
;
Thanks a Lot, Andrei Odegov
Update 2
i have to extract "serialNumber" and "endUser" from this XML with previous query too.
<CatalogItem subType="0" type="93">
<id>9d6825e6-fa89-44e1-8e0f-61768016624c</id>
<name>tteesstt</name>
<description />
<attributes>0</attributes>
<entries>
<entry>
<serialNumber>zsxxdx</serialNumber>
<userType>user</userType>
<endUser>farhad#drf.local</endUser>
<description />
</entry>
</entries>
</CatalogItem>
Update 3
<CatalogItem subType="0" type="12">
<id>169d6139-bdb6-4fff-88e6-09f00dd2f155</id>
<name>za</name>
<description />
<attributes>0</attributes>
<SIDMode>true</SIDMode>
<nameIdentificationType>1</nameIdentificationType>
<entries>
<entry>
<name>farhad</name>
<path>CN=farhad,CN=Users,DC=DCVLAB,DC=LOCAL</path>
<uid>F7A84834EAC8984AA7FBEAD7A5539432</uid>
<serverName>192.168.7.2</serverName>
<sid>S-1-5-21-907365782-933549064-1582919620-1103</sid>
<type>user</type>
<entry>
<name>IT-MNG</name>
<path>CN=IT,CN=Users,DC=sglab,DC=local</path>
<uid>BEDC7DDF93A8D54DAC7A5CEE7307BF4F</uid>
<serverName>192.168.7.201</serverName>
<sid>S-1-5-21-3362085216-3357124804-2073486349-1107</sid>
<type>user</type>
</entry>
</entries>
</CatalogItem>

Answer 1

Taking into account your test data, you can try to adapt the following code:
declare #x xml = '
<CatalogItem subType="0" type="82">
<id>7c75be9f-d490-4ff5-81ed-064349f4efde</id>
<name>Test White</name>
<description />
<attributes>0</attributes>
<parameters><conditions><condition grouping="or"><prop-key>usb_device_serial_number</prop-key><op-key>equals</op-key><value><![CDATA[gdefgd||]]></value></condition></conditions></parameters>
<customParameterNames />
<enforceProducts>
<Product type="WIN" />
</enforceProducts>
</CatalogItem>
';
select cast(#x.value('(//parameters)[1]', 'nvarchar(max)') as xml).query('//value/text()') as cdata;
Output
+----------+
| cdata |
+----------+
| gdefgd|| |
+----------+
Update:
if object_id('dbo.cdata') is not null drop table dbo.cdata;
create table dbo.cdata(
x xml
);
insert into dbo.cdata(x)
values ('
<CatalogItem subType="0" type="82">
<id>7c75be9f-d490-4ff5-81ed-064349f4efde</id>
<name>Test White</name>
<description />
<attributes>0</attributes>
<parameters><conditions><condition grouping="or"><prop-key>usb_device_serial_number</prop-key><op-key>equals</op-key><value><![CDATA[gdefgd||]]></value><value><![CDATA[foo]]></value></condition></conditions></parameters>
<parameters><conditions><condition grouping="or"><prop-key>usb_device_serial_number</prop-key><op-key>equals</op-key><value><![CDATA[gdefgd||170]]></value><value><![CDATA[foo170]]></value></condition></conditions></parameters>
<customParameterNames />
<enforceProducts>
<Product type="WIN" />
</enforceProducts>
</CatalogItem>
'), ('
<CatalogItem subType="0" type="82">
<id>7c75be9f-d490-4ff5-81ed-064349f4efde</id>
<name>Test White</name>
<description />
<attributes>0</attributes>
<parameters><conditions><condition grouping="or"><prop-key>usb_device_serial_number</prop-key><op-key>equals</op-key><value><![CDATA[gdefgd||42]]></value><value><![CDATA[foo42]]></value></condition></conditions></parameters>
<customParameterNames />
<enforceProducts>
<Product type="WIN" />
</enforceProducts>
</CatalogItem>
');
select
xv.v.value('.', 'nvarchar(max)') as cdata
from dbo.cdata
cross apply
cdata.x.nodes(
'//parameters'
) as pp(p)
cross apply (
values(
cast(pp.p.value(
'.', 'nvarchar(max)'
) as xml)
)
) as xp(p)
cross apply
xp.p.nodes('//value') as xv(v);
Update #2:
You can get more detail information about working in Sql Server with XML data in the "XQuery Language Reference (SQL Server)".There are two articles on the CROSS and OUTER APPLY operators with examples of their application to XML data.
select
replace(xv.v.value('.', 'nvarchar(max)'), '|', '') as cdata,
xci.ci.value('(//serialNumber)[1]', 'nvarchar(15)') as sn,
xci.ci.value('(entries/entry/endUser)[1]', 'nvarchar(50)') as eu,
xci.ci.value('(entries/entry/name)[1]', 'nvarchar(50)') as name
from dbo.cdata
cross apply
cdata.x.nodes('/CatalogItem') as xci(ci)
outer apply
xci.ci.nodes('parameters') as pp(p)
outer apply (
values(
cast(pp.p.value(
'.', 'nvarchar(max)'
) as xml)
)
) as xp(p)
outer apply
xp.p.nodes('//value') as xv(v);
Output:
+-----------+--------+------------------+--------+
| cdata | sn | eu | name |
+-----------+--------+------------------+--------+
| gdefgd | zsxxdx | farhad#drf.local | NULL |
| foo | zsxxdx | farhad#drf.local | NULL |
| gdefgd170 | zsxxdx | farhad#drf.local | NULL |
| foo170 | zsxxdx | farhad#drf.local | NULL |
| NULL | foobar | user#mail.net | NULL |
| NULL | NULL | NULL | farhad |
+-----------+--------+------------------+--------+
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