Question

I have 2 tables.. a client table..and orders table..i’m trying to get the last 6 orders from each clien, but for all the clients together…i’m having trouble thinking of how to do this haha..it’s friday…any help/ideas? ..i’m using microsoft sql server studio if ya need to know

here is the code i have right now

select /*top 6*/ c.Company_name, oh.qms_control_nbr, c.reminder_notice 
from orderheader oh inner join clients c on oh.prnt_id = c.id
where c.status = 'Active'
group by c.company_name, oh.date_ordered, oh.qms_control_nbr, c.reminder_notice
order by c.company_name asc, c.reminder_notice asc, oh.Date_ordered desc

this give me all the orders for each client, ..just want to limit to last 6

so..it might give results like this

_company_____              __order-num___
company a                     1111
company a                     1112
company a                     1113
company a                     1114
company a                     1115
company a                     1116
company b                     1221
company b                     1222
company b                     1433
company b                     1524
company b                     1345
company b                     1436

Answer 1

You could use the ROW_NUMBER OLAP Function to get this:

Edit based on new info in question. I think this should get what you’re looking for:

SELECT c.Company_name, oh.qms_control_nbr, c.reminder_notice 
FROM (SELECT t.*,
             ROW_NUMBER() OVER (PARTITION BY prnt_id ORDER BY date_ordered DESC) AS RN
      FROM orderheader t) oh
JOIN clients c
  ON oh.prnt_id = c.id
WHERE c.status = 'Active'
  AND oh.rn < 7
ORDER BY c.company_name asc, c.reminder_notice asc, oh.Date_ordered desc