SQL Count Of Open Orders Each Day Between Two Dates

Question

I\'ve tried searching but it\'s likely I\'m using the wrong keywords as I can\'t find an answer.

I\'m trying to find the number of orders that are open between two d

Answer 1

Calling the result column count was a bit odd because it seems to be in fact a row number. You can do that by using ROW_NUMBER.

The other interesting part is that you also want open date and close date as separate rows. Using a simple UNION will solve that.

WITH cte 
     AS (SELECT Row_number() OVER ( PARTITION BY employee  
                                    ORDER BY order_ref) count, 
                employee, 
                opened, 
                closed 
         FROM   orders) 
SELECT employee,  opened date,  count 
FROM   cte 
UNION ALL 
SELECT employee,  closed date,  count 
FROM   cte 
ORDER  BY Date, 
          employee 

DEMO