Multiples of a particular number

[Daniel Shanahan]

Is it possible to select records based on multiples of a particular number? I want to use this in a Case statement. I currently have

Case (Subject_ID = 3 or 8 or 13 or 23 or 28; "Mathematics")

This works fine. I am just wondering if I can shorten it a bit. What I'd like to do is say "Find every multiple of 5 beginning at 3 and ending at 28." Also, would such a function work with an "or" statement? I want "Mathematics" to appear only if one of the multiples of is true.

Thanks.

dan

[comment]

I currently have

Case (Subject_ID = 3 or 8 or 13 or 23 or 28; "Mathematics")

This works fine.

I doubt it. This would ALWAYS return "Mathematics".

"Find every multiple of 5 beginning at 3 and ending at 28."

You could try:

Case ( not Mod ( Subject_ID - 3 ; 5 ) ; "Mathematics" )

Or, if the 'ending at 28' condition is significant:

Case ( not Mod ( Subject_ID - 3 ; 5 ) and Subject_ID < 29 ; "Mathematics" )

I want "Mathematics" to appear only if one of the multiples of is true.

I didn't get this part.

[The Shadow]

Mod() can find multiples of 5:

Case( Subject_ID >= 3 and Subject_ID <= 28 and Mod(Subject_ID-3, 5) = 0; "Mathematics" )

I'm not sure what you mean by "one" of the multiples, is Subject_ID a multi-key value?

I see my post is an exact duplicate.... :)

Edited July 26, 2007 by Guest

[Daniel Shanahan]

Thanks for the responses. I was trying to create a "work-around." I have a series of hierarchical portals and I was trying to "dump" information into a field and then have that field accessible via a portal on another page. See the attached file.

Also, see my related post Topic#188726.

Thanks.

dan

TeacherDB.fp7.zip

[Daniel Shanahan]

Can anyone shed some light on why the portal fields "bounce" back to the first portal record?

- dan.

[The Shadow]

I took a look at your file. Unfortunately, portals are not quite that flexible.

If I have a chain of relationships, with A being the table the layout is based on:

   A - B - C - D - E - F

You can create a portal for table D to put on this layout, and it will show all related records from D. You can also drop fields from B and C into the portal, and they will be the correctly corresponding values for each D record.

But, putting a field from E or F into the portal will only show the first value (for the D record you're looking at). This is similar to how dropping a field for D on the A layout will only show the first value.

Basically, a portal based on table D will have one row for each related record in D, you'll never get any more than that.

Hope this helps.

[Daniel Shanahan]

Thanks Shadow. It helps to know that I could not make this work because it was not intended to work that way (hope that makes sense).

Thanks for the reply.