NVL and replace date when date field is null from table

Question

I am trying to replace a field with a date default when it is null and it is not working
I was wondering if someone could give me a clue to what I am doing wrong
Here is the part of the select statement:
NVL (o.mass_production_date__c, TO_DATE ('1900-01-01', 'yyyy-mm-dd')),
It is not replacing a NULL value in o.mass_production_date__c if it is returning null
o.mass_production_date__c is a DATE format field
TIA,
Mike

Answer 1

Can you post the actual query and screen cature show it's not working.
Most likely is because your data is not NULL but some empty string.
The function should work just fine like following,
TEST@rman> create table t1 (val date) ;
Table created.
TEST@rman> insert into t1 values (null);
1 row created.
TEST@rman> commit;
Commit complete.
TEST@rman> select * from t1;
VAL
TEST@rman> select nvl(val,TO_DATE ('1900-01-01', 'yyyy-mm-dd')) from t1;
NVL(VAL,T
01-JAN-00