PostgreSQL ignores dashes when ordering
-
11-11-2019 - |
Question
I have a PostgreSQL 8.4 database that is created with the da_DK.utf8 locale.
dbname=> show lc_collate;
lc_collate
------------
da_DK.utf8
(1 row)
When I select something from a table where I order on a character varying column I get a strange behaviour IMO. When ordering the result PostgreSQL ignores dashes that prefixes the value, e.g.:
select name from mytable order by name asc;
May return something like
name
----------------
Ad...
Ae...
Ag...
- Ak....
At....
The dash prefix seems to be ignored.
I can fix this issue by converting the column to latin1 when ordering:
select name from mytable order by convert_to(name, 'latin1') asc;
The I get the expected result as:
name
----------------
- Ak....
Ad...
Ae...
Ag...
At....
Why does the dash prefix get ignored by default? Can that behavior be changed?
No correct solution
Licensed under: CC-BY-SA with attribution
Not affiliated with StackOverflow