Hello!
As I remember, InterBase simply renamed the second XDate to XDate_1 or XDate1.
But as I see the PGSQL keeps the first and second too (which comes with an asterisk "*").
Like select t.* (EXCEPT XDate) from t
Or can I reference them by the order?
I have a big "WITH QUERY", with many subqueries.
I have a date field, named "XDate".
In the middle I duplicated this field:
...
midqry1 as (
select coalesce(XDate
, '0001-01-01'), * from prevqry
),
midqry2 as (
select ArtID, max(XDate) as Max_XDate from midqry1
where acq = True
group by ArtID
where acq = True
group by ArtID
)
...
Result: ERROR: column reference "XDate" is ambiguous
As I remember, InterBase simply renamed the second XDate to XDate_1 or XDate1.
But as I see the PGSQL keeps the first and second too (which comes with an asterisk "*").
So in midqry1 I have two XDate columns.
If the two XDates came from different tables, I can use the table prefix.
But now they are in one table.
Is there any way to suppress the original field?
Or say to PGSQL to skip the first XDate field?
Like select t.* (EXCEPT XDate) from t
Or can I reference them by the order?
Ok, I can solve this problem by renaming the new first XDate, but I want to know is there any solution to this problem?
Thank you for any help, info, example!
Best regards
dd
