question about Xpath

[seco]

Hi

im using Sql over the dataset and it works well but somebody says that Xpath over the xml of the dataset can perform things that sql can't
i need any example of this situation if any one have

thanks in advance.

 

[cjard]

For example:
using xpath you can select the nth node of a group (not that you should want to). SQL cannot do this without some amazing trickery.

ps; Oracle is some amazing trickery

 

[seco]

thanks for reply
really i know this but how is that i don't others told me that when working with xpath sql go out of the window !!

what xpath can do that sql can't do?