I would unpivot[/url] the source table, join it with the metadata table, use cross tabs[/url] to obtain the desired result and run away from that horrible design.
That destination table looks like real horror for any RDBMS.
Luis C.
General Disclaimer:
Are you seriously taking the advice and code from someone from the internet without testing it? Do you at least understand it? Or can it easily kill your server?
How to post data/code on a forum to get the best help: Option 1 / Option 2