Back to zero in the Group of

Hello

I have table, say commands, such as

CREATE TABLE ORDERS ("CUST_ID" NUMBER (10), "ORDER_ID")
NUMBER (10), DATE OF THE "ORDER_DATE")

I would like a list of CUST_ID with the number of orders placed in a given time interval, so I have a

SELECT DISTINCT CUST_ID, COUNT (*) AS ORDER_COUNT
Orders
WHERE the ORDER_DATE BETWEEN < date1 > and < date2 >

I have the list as

CUST_ID ORDER_COUNT
----------------------------------
1 27
2 15
2 t2


and so on. Cust_id 3 is not present, because it has not ordered in the meantime.

I would like to have:

CUST_ID ORDER_COUNT
----------------------------------
1 27
2 15
*3                0*
2 t2

How can I do?

Thank you
select c.cust_id, count(o.order_id)
from   customers c
,     (select * from orders where order_date between :startdate and :enddate) o
where  c.cust_id = o.cust_id (+)
group by c.cust_id

Tags: Database

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