How to compare two columns and provide a report

Question

hi guys any idea on this one i have a table in apex
which looks like this                                                Create table Assessments ( USER_ID varchar(40) , Assessed number ) ;
                                                                                     CREATE OR REPLACE TRIGGER "TABLE_IMP_T1"
                                                                                      BEFORE
                                                                                      insert on "TABLE_IMP"
                                                                                     for each row
                                                                                     begin
                                                                                     :NEW.USER_ID := nvl(v('APP_USER'),USER);
                                                                                     :NEW.ASSESSED := ('1');
                                                                                     end;
The data in this table looks like after some inserts                          USER_ID                    ASSESSED
                                                                                                                      user1@mail                      1
                                                                                                                      user2@mail                       1
                                                                                                                      user3@mail                       2
                                                                                                                      user4@mail                       7
Then i have another table that has fixed values in it which is called    Assessments_complete  the data in this table looks like                 USER_ID             Assessments_2do 
                                                                                                                                                                                                                                                   user1@mail                       1
                                                                                                                                                                                                                                                    user2@mail                      1
                                                                                                                                                                                                                                                    user3@mail                      3
                                                                                                                                                                                                                                                    user4@mail                     10
What id like to do is create a report in apex that compares the to tables  and would have columns in the report to shows the USER_ID ,  ASSESSED  ,  Completed   so it would look something like 
USER_ID                      ASSESSSED                    COMPLETE
USER1@MAIL               1                                         yes
USER2@MAIL               1                                         yes
USER3@MAIL               2                                         no
USER4@MAIL               7                                         no
So why it shows no for user3@mail and user4@mail is because there Assessments 2do is not he same as Assessed 
Any ideas guys

Answer 1

SCW,
I'm sure there is a clever way to cascade functions to avoid adding an auxiliary column in your practice table, but to me it wouldn't be worth the aggravation. I would add a column that concatenates Columns A & B, AWG & mils. This column can be anywhere and would be Hidden. Let's say your new column is Column N.
In Column N, fill the body rows with:
=A&"-"&B
As good Numbers programming form would indicate, let's name the Practice Table Practices and only put the practices in that table. In another table where you do the lookup, let's call it Program, we will have the calculation/lookup.
Based on your example, I'd guess that AWG may be in Column D and mils in Column E of your Program table, and the Soak lookup in Column F. If I'm wrong, adjust the column id.
In Column F, write:
=OFFSET(Practices::I$1,MATCH(D&"-"&E, Practices::N,0)−1, 0)
The hyphen in the concatenated representation of the combination of AWG and mils is just tp make it more readable.
As I'm sure you know, you could use other approaches, but since I had you put your aux column at the end of your Practices table, OFFSET with MATCH is a clean approach. INDEX could be used too.
Here's an illustration:
Regards,
Jerry