>>Hi Larry

>I may have been reading too much into it. My take on the original message was more in line with JOINS (since he used the term foreign key) and how those were affected.

Interesting. My immediate thought was in terms of handling inserts, updates and deletions - especially in the context of clustered indexes. Like you I can't really see why queries would be affected since they are, by definition, read only.

AFAIK it makes no significant difference whether a column is integer, char or varchar when it is being read. So we are in full agreement there at least :)