Mike,

>Actually, a date or datetime is only 8 bytes. TTOC(,1) is 14 so for network traffic, date/datetime would be better. Your initial posting was correct. The TTOC would be necessary for human-readable ordering, not for optimization.

I would be surprised if it makes a significant difference. CDX Indexes create compacted index keys for character index expressions, so a given index node could only be a few bytes long though the whole index expression is 14 bytes long. It would not even surprise me if the tags are exactly the same size.

Walter,