sql server new users: Does anyone know where I could find comprehensive information (on the net)
on how to intepret SQL server's execution plans?
For example:
Hatch Match/Left semi join - Cost: 41%;
Sort/Distinct Sort - Cost:100%;
Merge join/Inner join - Cost: 0%

Thanks in advance

http://sql-server-performance.com is a great repository of information;
here's one link to understanding the execution plans (you can search
for others):

http://www.sql-server-performance.com/query_execution_plan_analysis.asp