| From: | D'Arcy Cain <darcy(at)druid(dot)net> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: COMMUTATOR doesn't seem to work |
| Date: | 2012-06-22 04:32:35 |
| Message-ID: | 4FE3F563.10504@druid.net |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On 12-06-22 12:22 AM, Tom Lane wrote:
> Um, an operator with different types on left and right cannot be its own
> commutator.
Understood. I completely misunderstood the purpose of COMMUTATOR. I
thought that it was telling the system that the procedure could be
called with the arguments reversed if it could not find a specific
procedure. I see now what it is for.
So I have my type working now but I had to create a new C function
that take the opposite argument order. Seems redundant but I could
not see a better way.
--
D'Arcy J.M. Cain <darcy(at)druid(dot)net> | Democracy is three wolves
http://www.druid.net/darcy/ | and a sheep voting on
+1 416 425 1212 (DoD#0082) (eNTP) | what's for dinner.
IM: darcy(at)Vex(dot)Net
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Kyotaro HORIGUCHI | 2012-06-22 06:31:39 | Re: pl/perl and utf-8 in sql_ascii databases |
| Previous Message | Tom Lane | 2012-06-22 04:22:07 | Re: COMMUTATOR doesn't seem to work |