Question

I’ve got a table with an xml column called data (xml has got id node) and second table with idSecond column.

I would like to perform join between these two tables so that data[id] = secondTable.ID

What would be the syntax for this in SQL Server 2005 ?

thanks for any hints

Answer 1

Use xml.value() method to project the node id, then join on the projected value. Eg:

with x as (
select xmlcolumn.value(N'xquery_for_node...', N'type') as id,
   ...
from xmltable)
select ...
from x join secondtable on x.id = ...

Actual syntax and xquery used depends on the schema of your tables and the XML content. If there are multiple node ids to project then use xml.nodes() in a cross apply instead.