Hey Tlieu
I'm not aware of any Height datatype, you could though convert the inches to/from the decimal like this:
where 'heightfeet' is the height in feet and 'heightinches' is the inches and 'Dheight' is the Decimal equivelant.
<cfset heightfeet = 5>
<cfset heightinches = 11>
<cfset cv = heightinches / 12 >
<cfset Dheight = heightfeet + cv>
Dheight would now be ready to enter into a DB and will sort correctly for the heighest or lowest.
you simply change your 12 inch scale into a 10 0.91666th of an inch scale making it store easily in a decimal world.
you would convert it back from the DB like this:
<cfset heightfeet = #int(DBheight)# >
<cfset cv = DBheight - heightfeet >
<cfset heightinches = cv * 12 >
Then you can display them anyway you want. These conversions could probably be written more compactly but I didn't want to think about it.
Hope it helps.
Have fun......