Gene, You're after something like this?
SELECT shipping.id, shipping.FromLoc, shipping.ToLoc,
To_location.name, From_location.name
FROM shipping
LEFT JOIN locations To_location ON shipping.ToLoc = To_location.id
LEFT JOIN locations From_location ON shipping.FromLoc = From_location.id
WHERE ...
On Jun 5, 2007, at 9:03 AM, Beverly Voth wrote:
Gene, if these are in an array, then you have to look them up, eh? :D
If they are in a SQL table, you have to query them, right?
You have a "join table". If you are creating these "on-the-fly" and
putting
the values into an array, why not put the "text" locations into
columns,
too, as you make the "join table/array"?
--
Beverly Voth Tier3 Data & Web Services Group, LLC
606-864-0041 http://www.tier3web.com/xml.htm
Certified FileMaker 7 Developer * FileMaker Business Alliance
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On 6/5/07 11:44 AM, "Wolf, Gene" <[EMAIL PROTECTED]> wrote
in whole
or in part:
I knew this wasn't going to be clear the first time. *laughs*
Assume a record with the following fields and data:
Field names: RecID FromLoc ToLoc
1 10 12
2 14 10
3 11 9
4 12 11
Now, the from and to locations are simply keys to another table
containing the description. My question is, what is the easiest
way to
display the text value of the from and to location values other than
iterating through an array and looking up each individual value?
________________________________
From: Jesse Parker [mailto:[EMAIL PROTECTED]
Sent: Tuesday, June 05, 2007 11:32 AM
To: [email protected]
Subject: RE: Witango-Talk: Question of joins
I'm not sure I'm following you. I think you have a file that
contains
an "array" of values, and you want to do a join-like operation
with your
DB for reporting purposes.
If this is the case, you can probably use <@FILTER> to get only the
relevant records from each array. If you post more detail, I will
try
to give you the filter expression.
I think you might be happier in the long run if you put your list of
values in the DB, instead of using the file to store these values
- that
way you can use a simple join, and it's likely to be much faster than
any file-based operations.
-----Original Message-----
From: Wolf, Gene [mailto:[EMAIL PROTECTED]
Sent: Tuesday, June 05, 2007 11:00 AM
To: [email protected]
Subject: Witango-Talk: Question of joins
This is probably simplistic and perhaps more of a SQL
question than a Witango question but I'm going to ask anyway.
*laughs* I
have an application set up where a user selects a from location
and a to
location, from a dropdown list, of something they are shipping. The
dropdown list is populated from a file and the resulting from and to
location codes are recorded to a database record in separate fields
named shipfrom and shipto. No problem so far. Everything works
perfectly.
Now, in reporting I want to show the description of the ship
from and ship to locations. I can read the records into an array and
look up each location from the database and then display the array
when
done but that seems inefficient, especially when I have to use a for
loop to process the array. Is there some way to join two different
fields on the same lookup table, in a Witango search action, in
order to
pull different text values for each of the fields?
Gene Wolf
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