|nodename||Selects all nodes with the name "nodename"|
|/||Selects from the root node.|
|//||Selects nodes in the document from the current node that match the selection no matter where they are|
|.||Selects the current node|
|..||Selects the parent of the current node|
|/bookstore/book||Selects the first book element that is the child of the bookstore element.|
|/bookstore/book[last()]||Selects the last book element that is the child of the bookstore element|
|/bookstore/book[last()-1]||Selects the last but one book element that is the child of the bookstore element|
|/bookstore/book[position()<3]||Selects the first two book elements that are children of the bookstore element|
|//title[@lang]||Selects all the title elements that have an attribute named lang|
|//title[@lang='en']||Selects all the title elements that have a "lang" attribute with a value of "en"|
|/bookstore/book[price>35.00]||Selects all the book elements of the bookstore element that have a price element with a value greater than 35.00|
|/bookstore/book[price>35.00]/title||Selects all the title elements of the book elements of the bookstore element that have a price element with a value greater than 35.00|
Syntax description from w3cschools.com.
Hint for streaming: Node can only be executed in real streamed fashion if every single XPath query is configured as follow (see XPath Query Settings):
The column names are fixed (i.e. select 'new column name') and either 'Single Cell', 'Collection Cell', or 'Multiple Rows' are selected as 'Multiple tag option'.
This option is useful when you do not have the default namespace of your document at hand.
If checked, the namespace of the root element is added to the Namespaces table during runtime. Please define a prefix for this namespace in Prefix of root's namespace.
For the example of XHTML documents the namespace of the root element is http://www.w3.org/1999/xhtml so that with the root's prefix of pre you can leave the Namespaces table empty.
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