COunt Unique Values in Report

[Guest]

Hi

I have a very complicated (well to me it is) report which returns fiinancial
information on exhibition stands sold for a major show. The entire database
is on the principle unique invoice number equals a stand. CLient has just
informed me that very occasionally thye will sell additional space to the
smae client which results in additional invoice number but same stand number.

In my report I need to total the number of stands which is 4 less than the
number of invoices upon which the underlying query groups.

Is there a way in the report to Count Uniqu occurences? I tried inserting a
sub report which worked great and returned the correct figure but for some
reason when I ran the report asked for a variable value for a field which
definitely does not exist in the report - can't figure that out either! ANy
help much appreciated

Sheila

 

[[MVP] S.Clark]

Without knowing your table structures, the queries used to gather the info,
and the report layout, it is to difficult to offer a concrete answer.
Please feel free to visit the Queries or Reports newsgroups to post more
specific information about this objects.

 

[Guest]

Sheila, my guess would be to add DISTINCT to your SELECT statement...