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Home > Forums > Programmers > DBMS Packages > Oracle: Oracle release - 9i and earlier Forum

Crystal Formula Question using sql

Read More Threads Like This One

jrtrice (TechnicalUser)

2 Dec 11 17:39

Hello All,

I am using a report to show all meds for a patient for each paticular lab date. So say they come in for lab work on a particular date. Each lab date they have open meds that I need to list for each lab date. I can get it to list each med and the lab dates which display they meds units.

For example

12/04/11      amikacin  4 mg
12/05/11      amikacin  4 mg
12/06/11      amikacin  8 mg
12/07/11      amikacin  8 mg
12/08/11      amikacin  4 mg
12/09/11      amikacin  4 mg
12/10/11      amikacin  12mg

12/04/11      captropril  4 mg
12/05/11      captropril  4 mg
12/06/11      captropril  8 mg
12/07/11      captropril  4 mg
12/08/11      captropril  4 mg
12/09/11      captropril  12 mg
12/10/11      captropril  12 mg

They only want to pull in the last six dates and the associated information. I am trying to set up a formula in crystal to supress all dates after six. The problem here is that it only displays the six amikacin. I want it to display the first six of each med and not just the first six. Any idea of how I can do this?

I need to distinct count the medicine_name and lab date but not sure how to combine distinct counts on two columns so that I can pull in the last six lab dates for each medicine?

I have a parameter set up to allow them to select how many records they want to pull. I just need it to pull that number of records for each med and not just that many records total for all meds.

I hope that makes sense.

Thanks

Any ideas on how to do this?

Dagon (MIS)

5 Dec 11 6:20

What ranking queries were invented for:

CODE

drop table med;

create table med (issdate date, descr varchar2(50), amt varchar2(50));

insert into med values(to_date('12/04/11', 'DD/MM/YY'),'amikacin',  '4 mg');
insert into med values(to_date('12/05/11', 'DD/MM/YY'),'amikacin',  '4 mg');
insert into med values(to_date('12/06/11', 'DD/MM/YY'),'amikacin',  '8 mg');
insert into med values(to_date('12/07/11', 'DD/MM/YY'),'amikacin',  '8 mg');
insert into med values(to_date('12/08/11', 'DD/MM/YY'),'amikacin',  '4 mg');
insert into med values(to_date('12/09/11', 'DD/MM/YY'),'amikacin',  '4 mg');
insert into med values(to_date('12/10/11', 'DD/MM/YY'),'amikacin',  '12mg');

insert into med values(to_date('12/04/11', 'DD/MM/YY'),'captropril',  '4 mg');
insert into med values(to_date('12/05/11', 'DD/MM/YY'),'captropril',  '4 mg');
insert into med values(to_date('12/06/11', 'DD/MM/YY'),'captropril',  '8 mg');
insert into med values(to_date('12/07/11', 'DD/MM/YY'),'captropril',  '4 mg');
insert into med values(to_date('12/08/11', 'DD/MM/YY'),'captropril',  '4 mg');
insert into med values(to_date('12/09/11', 'DD/MM/YY'),'captropril',  '12 mg');
insert into med values(to_date('12/10/11', 'DD/MM/YY'),'captropril',  '12 mg');

select descr, issdate, amt
from
(select descr, amt, issdate, rank() over (partition by descr order by issdate desc) rnk
from med)
where rnk <= 6
order by descr, issdate

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