Re: [HACKERS] time format
On Sat, Jan 03, 2004 at 10:20:57PM +0100, ivan wrote: ok, bat each time where i want to do select .. a nie tu use to_char, but it should be in function timestamp_out to convert time to string it would be easer and faster. I don't think it will too much faster :-) BTW, for example the Oracle allows to define default date/time output format by same way as for to_char(). TODO (?): SET TIMESTAMP_FORMAT = 'MM/DD/ HH24:MI:SS'; SELECT 'now'::timestamp; timestamp 01/05/2004 10:25:01 But it require check (be sure) that defined format is possible without problems convert back from string to timestamp. For this Thomas didn't like this idea. I think dynamic timestamp format is final solution of all problems with PostgreSQL date/time formats. Comments? Karel On Sat, 3 Jan 2004, Kurt Roeckx wrote: On Sat, Jan 03, 2004 at 09:25:14AM +0100, ivan wrote: but what about default style ? first time when i saw DateStyle i thought that i can use it like C/C++ function strftime. I would be not bad idea to have custom data style :) Use to_char() function to put it in any format you want. Kurt ---(end of broadcast)--- TIP 8: explain analyze is your friend ---(end of broadcast)--- TIP 9: the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match -- Karel Zak [EMAIL PROTECTED] http://home.zf.jcu.cz/~zakkr/ ---(end of broadcast)--- TIP 7: don't forget to increase your free space map settings
Re: [HACKERS] time format
there can be same problems with back convering, but its would be only when select is going out, to cstring form, and all its depend on user, but this is ok :) On Mon, 5 Jan 2004, Karel Zak wrote: On Sat, Jan 03, 2004 at 10:20:57PM +0100, ivan wrote: ok, bat each time where i want to do select .. a nie tu use to_char, but it should be in function timestamp_out to convert time to string it would be easer and faster. I don't think it will too much faster :-) BTW, for example the Oracle allows to define default date/time output format by same way as for to_char(). TODO (?): SET TIMESTAMP_FORMAT = 'MM/DD/ HH24:MI:SS'; SELECT 'now'::timestamp; timestamp 01/05/2004 10:25:01 But it require check (be sure) that defined format is possible without problems convert back from string to timestamp. For this Thomas didn't like this idea. I think dynamic timestamp format is final solution of all problems with PostgreSQL date/time formats. Comments? Karel On Sat, 3 Jan 2004, Kurt Roeckx wrote: On Sat, Jan 03, 2004 at 09:25:14AM +0100, ivan wrote: but what about default style ? first time when i saw DateStyle i thought that i can use it like C/C++ function strftime. I would be not bad idea to have custom data style :) Use to_char() function to put it in any format you want. Kurt ---(end of broadcast)--- TIP 8: explain analyze is your friend ---(end of broadcast)--- TIP 9: the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match -- Karel Zak [EMAIL PROTECTED] http://home.zf.jcu.cz/~zakkr/ ---(end of broadcast)--- TIP 4: Don't 'kill -9' the postmaster
Re: [HACKERS] time format
El Sáb 03 Ene 2004 18:20, ivan escribió: ok, bat each time where i want to do select .. a nie tu use to_char, but it should be in function timestamp_out to convert time to string it would be easer and faster. Look deeper into what Christopher said and use casting to get the right output: prueba= select now(); now --- 2004-01-04 09:53:41.131079-03 (1 row) prueba= select now()::timestamp(0); now - 2004-01-04 09:53:43 (1 row) Get the difference? -- 09:52:01 up 39 days, 16:08, 2 users, load average: 0.60, 0.71, 0.72 - Martín Marqués| select 'mmarques' || '@' || 'unl.edu.ar' Centro de Telematica | DBA, Programador, Administrador Universidad Nacional del Litoral - ---(end of broadcast)--- TIP 1: subscribe and unsubscribe commands go to [EMAIL PROTECTED]
Re: [HACKERS] time format
Martin Marques [EMAIL PROTECTED] writes: Look deeper into what Christopher said and use casting to get the right output: prueba= select now()::timestamp(0); There's also current_timestamp(0), which is a more standards-compliant way of doing the same thing. regards, tom lane ---(end of broadcast)--- TIP 3: if posting/reading through Usenet, please send an appropriate subscribe-nomail command to [EMAIL PROTECTED] so that your message can get through to the mailing list cleanly
Re: [HACKERS] time format
i know, but i talking about default time output, it would be for time, date and date with time, not formating all the time. On Sun, 4 Jan 2004, Tom Lane wrote: Martin Marques [EMAIL PROTECTED] writes: Look deeper into what Christopher said and use casting to get the right output: prueba= select now()::timestamp(0); There's also current_timestamp(0), which is a more standards-compliant way of doing the same thing. regards, tom lane ---(end of broadcast)--- TIP 5: Have you checked our extensive FAQ? http://www.postgresql.org/docs/faqs/FAQ.html
Re: [HACKERS] time format
Quoting Tom Lane [EMAIL PROTECTED]: Martin Marques [EMAIL PROTECTED] writes: Look deeper into what Christopher said and use casting to get the right output: prueba= select now()::timestamp(0); There's also current_timestamp(0), which is a more standards-compliant way of doing the same thing. Didn´t know that existed. :-) Anyway, my observation was not on the now() function, but at the casting. He wants the output of th select over a timestamp field to come out without the milliseconds, which is done with the casting. Now, seeing your mail I realize that what he may want is this: CREATE TABLE table_name ( . time_field timestamp(0) ); Remember you will lose those milliseconds for ever with this table definition. -- Porqué usar una base de datos relacional cualquiera, si podés usar PostgreSQL? - Martín Marqués |[EMAIL PROTECTED] Programador, Administrador, DBA | Centro de Telematica Universidad Nacional del Litoral - ---(end of broadcast)--- TIP 4: Don't 'kill -9' the postmaster
Re: [HACKERS] time format
but what about default style ? first time when i saw DateStyle i thought that i can use it like C/C++ function strftime. I would be not bad idea to have custom data style :) On Fri, 2 Jan 2004, Christopher Kings-Lynne wrote: Create table with type TIMESTAMP(0) Chris ivan wrote: how can i change default time format because now i have for example 2004-01-01 16:51:46.995927 but i want only 2004-01-01 16:51:46, with out millisec. a tryed with Data-Style but there arent custom style :/ ---(end of broadcast)--- TIP 6: Have you searched our list archives? http://archives.postgresql.org ---(end of broadcast)--- TIP 1: subscribe and unsubscribe commands go to [EMAIL PROTECTED] ---(end of broadcast)--- TIP 2: you can get off all lists at once with the unregister command (send unregister YourEmailAddressHere to [EMAIL PROTECTED])
Re: [HACKERS] time format
On Sat, Jan 03, 2004 at 09:25:14AM +0100, ivan wrote: but what about default style ? first time when i saw DateStyle i thought that i can use it like C/C++ function strftime. I would be not bad idea to have custom data style :) Use to_char() function to put it in any format you want. Kurt ---(end of broadcast)--- TIP 8: explain analyze is your friend
Re: [HACKERS] time format
ok, bat each time where i want to do select .. a nie tu use to_char, but it should be in function timestamp_out to convert time to string it would be easer and faster. On Sat, 3 Jan 2004, Kurt Roeckx wrote: On Sat, Jan 03, 2004 at 09:25:14AM +0100, ivan wrote: but what about default style ? first time when i saw DateStyle i thought that i can use it like C/C++ function strftime. I would be not bad idea to have custom data style :) Use to_char() function to put it in any format you want. Kurt ---(end of broadcast)--- TIP 8: explain analyze is your friend ---(end of broadcast)--- TIP 9: the planner will ignore your desire to choose an index scan if your joining column's datatypes do not match
Re: [HACKERS] time format
Create table with type TIMESTAMP(0) Chris ivan wrote: how can i change default time format because now i have for example 2004-01-01 16:51:46.995927 but i want only 2004-01-01 16:51:46, with out millisec. a tryed with Data-Style but there arent custom style :/ ---(end of broadcast)--- TIP 6: Have you searched our list archives? http://archives.postgresql.org ---(end of broadcast)--- TIP 1: subscribe and unsubscribe commands go to [EMAIL PROTECTED]
[HACKERS] time format
how can i change default time format because now i have for example 2004-01-01 16:51:46.995927 but i want only 2004-01-01 16:51:46, with out millisec. a tryed with Data-Style but there arent custom style :/ ---(end of broadcast)--- TIP 6: Have you searched our list archives? http://archives.postgresql.org
