| Lists: | pgsql-hackers |
|---|
| From: | Tristan Wright <twright09(at)earlham(dot)edu> |
|---|---|
| To: | pgsql-hackers(at)postgresql(dot)org |
| Cc: | charliep(at)cs(dot)earlham(dot)edu |
| Subject: | Clarification on item on Todo List |
| Date: | 2011-10-28 15:46:07 |
| Message-ID: | 26093a2c-bd07-4732-ba2e-c4e7e0780a70@shee.earlham.edu |
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| Lists: | pgsql-hackers |
I am interested in this item on the list and its exact meaning:
(Under "Data Types")
- Fix data types where equality comparison is not intuitive, e.g. box
Can you elaborate on this item, I particularly fail to see what is non-intuitive about box comparisons (and I suppose other types where equalities are non-intuitive).
-Tristan
| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Tristan Wright <twright09(at)earlham(dot)edu> |
| Cc: | pgsql-hackers(at)postgresql(dot)org, charliep(at)cs(dot)earlham(dot)edu |
| Subject: | Re: Clarification on item on Todo List |
| Date: | 2011-10-31 14:22:36 |
| Message-ID: | 26109.1320070956@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Tristan Wright <twright09(at)earlham(dot)edu> writes:
> I am interested in this item on the list and its exact meaning:
> (Under "Data Types")
> - Fix data types where equality comparison is not intuitive, e.g. box
> Can you elaborate on this item, I particularly fail to see what is non-intuitive about box comparisons (and I suppose other types where equalities are non-intuitive).
box_eq compares the boxes' areas. The operator that most people would
consider to be "equality" is box_same (~=). The reason this is on the
TODO is that nobody's figured out a way to swap the two operator names
without breaking applications.
regards, tom lane