Filtering date records out of a large data set?

I'm new to BODS and it looks like a very powerful tool. I have a relatively easy task that I have not found a way to implement with SAP BODS. I have 2 tables.

TABLE 1 lists public holidays:  meta data: counter, holiday name, holiday date

data example:   1, New Years, 01/01/2013

                         2, National Day, 01/07/2013
3, Christmas, 25/12/2013

TABLE 2 contains tens of thousands of performance records for 1 month. The records have 3 fields:

Site name, date & time stamp, measurement

Site Name,                    DateTimeUtc_ConvertedEST,                 MaxDuration

websitename1               2013-07-01 06:43:05.630                  639

websitename1               2013-07-12 06:46:05.630                  511

websitename1               2013-07-12 06:49:05.630                  1200

.

.

.

websitename1               2013-07-25 06:49:05.630                   1200
websitename2               .                                                           .
websitename2               .                                                           .


For each unique websitename, I need to filter out all dates found in the holiday table (in this case July 1^st, 2013) and then determine the
total number of records remaining per website name, and the total number of records per website name < 800.


Expected Output

websitename,      #of records < 800,      total # of records

Websitename1              1          3 (because July 1^st filtered out)

Websitename2              etc.

Having trouble filtering out the holiday records.  Inner Join does not seem to work. 

Tried something like:

not (TABLE2."date" = TABLE1."date")

This join did not filter out the holiday records correctly.

Any ideas?