Re: [PERFORM] index over timestamp not being used

2007-07-25 Thread Ansgar -59cobalt- Wiechers
On 2007-07-25 Mario Weilguni wrote: > Am Dienstag 24 Juli 2007 schrieb Tom Lane: >>> I thought the to_char/to_date/to_timestamp functions were intented >>> for this purposes >> >> No, they're intended for dealing with wacky formats that the regular >> input/output routines can't understand or produ

Re: [PERFORM] index over timestamp not being used

2007-07-25 Thread Mario Weilguni
Am Dienstag 24 Juli 2007 schrieb Tom Lane: > > I thought the > > to_char/to_date/to_timestamp functions were intented for this purposes > > No, they're intended for dealing with wacky formats that the regular > input/output routines can't understand or produce. Really? I use them alot, because of

Re: [PERFORM] index over timestamp not being used

2007-07-24 Thread Tom Lane
Arnau <[EMAIL PROTECTED]> writes: >> Alternatively, do you really need to_timestamp at all? The standard >> timestamp input routine won't have any problem with that format: >> t.timestamp_in >= '20070101' > This is always I think I'm worried, what happens if one day the internal > format in whic

Re: [PERFORM] index over timestamp not being used

2007-07-24 Thread Arnau
Hi Tom, Alternatively, do you really need to_timestamp at all? The standard timestamp input routine won't have any problem with that format: t.timestamp_in >= '20070101' This is always I think I'm worried, what happens if one day the internal format in which the DB stores the date/times

Re: [PERFORM] index over timestamp not being used

2007-07-24 Thread Tom Lane
Arnau <[EMAIL PROTECTED]> writes: > timestamp_in | timestamp without time zone | default now() > SELECT ... > FROM > transactions t > LEFT OUTER JOIN statistics s ON t.transaction_id = s.transaction_id > WHERE > t.timestamp_in >= to_timestamp('20070101', 'MMDD') > GROUP BY date,