Does anyone know, why Oracle's NVL (and NVL2) function always evaluate the second parameter, even if the first parameter is not NULL? Simple test: CREATE FUNCTION nvl_test RETURN NUMBER AS BEGIN dbms_output.put_line('Called'); RETURN 1; END nvl_test; SELECT NVL( 0, nvl_test ) FROM dual returns 0, but also prints Called. nvl_tes...
I'm constructing a Hibernate Criterion, using a subselect as follows DetachedCriteria subselect = DetachedCriteria.forClass(NhmCode.class, "sub"); // the subselect selecting the maximum 'validFrom' subselect.add(Restrictions.le("validFrom", new Date())); // it should be in the past (null needs handling here) subselect.add(Property.f...
I have a table of orders for particular products, and a table of products that are on sale. (It's not ideal database structure, but that's out of my control.) What I want to do is outer join the order table to the sale table via product number, but I don't want to include any particular data from the sale table, I just want a Y if the jo...
Hi everyone, I want to write the following query as a Hibernate Criteria query: select to_char(nvl(ol.updated_datetime, ol.created_datetime), 'dd/mm/yyyy'), sum(discount_price) from order_line ol where nvl(ol.updated_datetime, ol.created_datetime) between to_date('05-may-10') and to_date('30-may-10') group by to_cha...
I'm needing to select first and last name in a table which is working fine in the following SQL, but the part that isn't working is the NVL function. The file should show all pilots at a company that fly helicopters and IF they don't have a licence the field HT_NAME should come up as 'N/A' and the field for end hours flown should be 0. I...