I'm trying to figure out the best way to traverse a global below is what I have written.
s X="^ZNAME"
r !,"Please insert a name or a portion of a name: ",str
d {
s X=$Q(@X) Q:X=""
i X[str!(@X[str)
{
w !,X
}
} While X'=""
q
I receive the following result ^ZName(subscript) if the name or portion of the name matches what is in the global. What do you guys suggest would be the best way to extract just the subscript? I was thinking $E or $P, but I don't think it would be specific enough. Also, if there are any additional books or websites that do a great job of instructing M, I would love to know and be very grateful. Thank you for all of your help.
In first you should look at official documentation, it is available in menu by cube in tray. And then you should look at $QUERY, which you use here, and $ORDER. So, there are big difference between both of this functions. $Query used to full scan for global, while $Order only for one level. If you still want to scan by $Query, you may look at $QSubscript function, which may help you to get value for particular subscript.
with $order, it may looks so
set index=""
for {
set index=$order(@X@(index))
quit:index=""
write !,index
// and for next level
set index2=""
for {
set index2=$order(@X@(index, index2))
quit:index2
write !?5,index2
}
}
Also, you may find something interesting in a new Developer Community portal. And get some online courses by InterSystems here.