A Dumb Querry

[Ugo DI LUCA]

This must be a very dumb querry.

Would Max(::RelatedByConstant:CompoundModDateAndHour) always return the Latest Compound suitable for a relationship to an Indexed Field in the Related File.

I'm trying to find out the best way to grab the latest modified ID in a related file.

Would a concanation of Time and Hour get greater and greater,

Version: v6.x

Platform: Mac OS 9

[-Queue-]

I should think if you used a concatenation of date and time set as a number, the number would increment as desired.

[Ugo DI LUCA]

Hi JT,

Thanks for the confirmation. It works a charm. I was concerned I could have missed some point before going this way.

Version: v6.x

Platform: Mac OS 9

[BobWeaver]

Although it's undocumented, you can use the Last() function to do this. It will always retrieve the value from the last related record.

[Ugo DI LUCA]

Hi,

In this instance Bob, I was looking for the latest modified value, not just the latest value.

Am I missing something ?

Version: v6.x

Platform: Mac OS 9

[-Queue-]

If you have the relationship sorted by date and time fields [ascending], then Last( ) will give you the most recently modified value. If you sort them descending, ::RelatedByConstant:CompoundModDateAndHour itself will give you the correct value since the first related record is the most recent. It all depends on which one works faster for you.

I think either of these methods would be faster than a Max( ), but I'm not sure whether the difference is negligible with a large record set.

[Ugo DI LUCA]

Wow,

How could I miss this obvious. I was focussed on the Concanation field, and totally forgot the individual fields themselves.

Sure, as they are indexed (scripted), these would be suitable for a sorting relationship.

Thanks both of you.

Version: v6.x

Platform: Mac OS 9