xmlpath with type - SQL Server Forums

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xmlpath with type

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learning_grsql
Posting Yak Master

230 Posts

Posted - 2014-06-11 : 15:04:12

The both queries produce same output for me so I wonder what the difference between them are.


select stuff 
(
(select ',' + column1 from table1
for xml path ('')),1,1,0)

[code]
select stuff
(
(
select ',' + column1 from table1
for xml path (''),type).value('.', 'nvarchar(max)'),1,1,0)

James K
Master Smack Fu Yak Hacker

3873 Posts

Posted - 2014-06-11 : 15:19:17

quote:
Originally posted by learning_grsql

The both queries produce same output for me so I wonder what the difference between them are.

select stuff
(
(select ',' + column1 from table1
for xml path ('')),1,1,0)

[code]
select stuff
(
(
select ',' + column1 from table1
for xml path (''),type).value('.', 'nvarchar(max)'),1,1,0)

If you have XML special characters in column1 (e.g. &, <, > etc.), the first query will tokenize them. Most likely that is not what you want when you are trying to concatenate. . The second query would preserve those characters literally.

learning_grsql
Posting Yak Master

230 Posts

Posted - 2014-06-12 : 04:18:28

ok thanks

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