A many-to-many relational problem (SQL and CFM)

Question

My question:
How to get CFM to return a many-to-many relationship in one
row using cfloop
My table structure:
Table A - Books
BookID | BookName
1 | Book One
Table B -
RelatingTable
BookID | AuthorID
1 | 60
1 | 61
Table C - Authors
AuthorID | AuthorName
60 | Bob
61 | Joe
My query:
SELECT * FROM Books, RelatingTable, Authors AS a
INNER JOIN Books AS b ON b.BookID = r.BookID
INNER JOIN RelatedTable AS r ON r.AuthorID = a.AuthorID
Output I am getting:
b.BookID | b.BookName | r.BookID | r.AuthorID | a.AuthorID |
a.AuthorName
---------|------------|----------|------------|------------|-------------
1 | Book One | 1 | 60 | 60 | Bob
1 | Book One | 1 | 61 | 61 | Joe
I am using a UDF that turns my relationship into a comma list
(authorlist), but the duplicates still return in CFM because the
JOIN relationship
The code I am using in CFM:
<cfloop query="rsBooksQuery">
#b.BookName#, written by #authorlist#
</cfloop>
How Coldfusion is displaying my output:
Book One, written by Bob, Joe
Book One, written by Bob, Joe
How I want my output displayed:
Book One, written by Bob, Joe
I need this to work in cfloop and not cfoutput! I know that
you can use group in CF output, but for the conditions I am using
this query, it must be in a loop
the reason why i keep the JOINs even though i have a UDF to
create a comma list is that some of my CFM pages use variables
passed to the qry to limit which books are displayed, for example
&author=60 (which would display a list of Bob's books that
include the comma list)
If you can suggest anything to help me I will be very
thankful

Answer 1

I need this to work in cfloop and not cfoutput! I know that
you can use
group in CF output, but for the conditions I am using this
query, it
must be in a loop
If you can suggest anything to help me I will be very
thankful
If you can not use <cfoutput...> with its group
feature, you need to
recreate the functionality with <cfloop...>. You can
create nested
<cfloop...> tags that keep track of the changing group
value. It takes
more code, but that's what happens when one sets outside the
bounds of
the built in functionality.