On 01/23/2013 03:00 AM, Ian Lawrence Barwick wrote:
Hi
2013/1/23 Kaloyan Iliev <kalo...@digsys.bg>:
Hi,
I have a little problem with extract epoch from interval. It seems that the
query works if the interval is in a string but not from DB field.
Could someone provide support.
(...)
You have a casting error; instead of:
dbr=# SELECT extract(EPOCH FROM INTERVAL b) FROM a;
ERROR: syntax error at or near "b"
LINE 1: SELECT extract(EPOCH FROM INTERVAL b) FROM a;
use
SELECT extract(EPOCH FROM b::INTERVAL) FROM a;
or
SELECT extract(EPOCH FROM CAST (b AS INTERVAL)) FROM a;
Would it not be simpler:
test=> SELECT extract(epoch from b) from a;
date_part
-----------
2592000
7776000
15552000
(3 rows)
As the b field is already an interval.
Regards
Ian Barwick
--
Adrian Klaver
adrian.kla...@gmail.com
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