Question

I generate an Excel using an SQL query per each day:

SELECT      COUNT(res_id) as TotalReservation
FROM        bup_vw_res_reservation
WHERE       res_deleted = 0 
AND         DATEPART(DAY,res_date_start) = 1

I execute this Query each time I want to change the DAY. To generate 1 sheet in my Excel file, I need to open and close 30 connections in my page. And if I need to make another sheet for a different company ,then I need to execute the same 30 query again. And the page becomes extremely slow 🙁

Is there another way to get the same result in 1 query ?

Answer 1

If you need the total, you could do

DATEPART(DAY, res_date_start) BETWEEN 1 AND 30

If you need each reservation count for each day, do this

SELECT      COUNT(res_id) as TotalReservation, DATEPART(DAY,res_date_start)
FROM        bup_vw_res_reservation
WHERE       res_deleted = 0 
GROUP BY    DATEPART(DAY,res_date_start)