* Grzegorz Jaśkiewicz:
> just never use SELECT *, but always call columns by names. You'll
> avoid having to depend on the order of columns, which is never
> guaranteed, even if the table on disk is one order, the return columns
> could be in some other.
This can't be true because several SQL features rely on deterministic
column order. Here's an example:
SELECT 1 AS a, 2 AS b UNION SELECT 3 AS b, 4 AS a;
a | b
---+---
1 | 2
3 | 4
(2 rows)
--
Florian Weimer <fweimer@bfk.de>
BFK edv-consulting GmbH http://www.bfk.de/
Kriegsstraße 100 tel: +49-721-96201-1
D-76133 Karlsruhe fax: +49-721-96201-99
