The following bug has been logged online:
Bug reference: 4739
Logged by: Roman Kononov
Email address: kono...@ftml.net
PostgreSQL version: 8.3.7
Operating system: GNU/Linux x86_64
Description: strange behavior of EXTRACT(quarter from INTERVAL)
Details:
test=# select month, extract(quarter from (month::varchar || '
month')::interval) from tbl;
month | date_part
-------+-----------
-6 | -1
-5 | 0
-4 | 0
-3 | 0
-2 | 1
-1 | 1
0 | 1
1 | 1
2 | 1
3 | 2
4 | 2
5 | 2
6 | 3
(13 rows)
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