From: | "Oliveiros d'Azevedo Cristina" <oliveiros(dot)cristina(at)marktest(dot)pt> |
---|---|
To: | "Tarlika Elisabeth Schmitz" <postgresql3(at)numerixtechnology(dot)de>, <pgsql-sql(at)postgresql(dot)org> |
Subject: | Re: data import: 12-hour time w/o AM/PM |
Date: | 2011-02-08 18:38:44 |
Message-ID: | 74DB3341AB704E989C87CAAD89D2526F@marktestcr.marktest.pt |
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Thread: | |
Lists: | pgsql-sql |
Howdy, Tarlika.
If the data doesn't bring the AM/PM how are you supposed to distinguish
between,say, 10pm and 10am ? Does it always start at 10:30am? So 10am never
arises?
Best,
Oliveiros
----- Original Message -----
From: "Tarlika Elisabeth Schmitz" <postgresql3(at)numerixtechnology(dot)de>
To: <pgsql-sql(at)postgresql(dot)org>
Sent: Tuesday, February 08, 2011 6:14 PM
Subject: [SQL] data import: 12-hour time w/o AM/PM
I am importing data in CSV format. My technique is to COPY the data
into interim tables (starting with a "z") where I analyze them, clean
up inconsistencies; eventually I will populate the "proper" tables with
these data. (In the example below: COPY CSV into zevent, from there
populate event.)
The time field of the event data is givng me a headache: it's in 12h
format but without the AM/PM qualifier!
CREATE TABLE zevent
(
id integer,
previous integer,
"next" integer,
location_id integer NOT NULL,
datum date NOT NULL,
otime character varying(5) NOT NULL
)
CREATE TABLE event
(
id integer NOT NULL,
location_fk integer NOT NULL,
otime timestamp without time zone NOT NULL,
next_fk integer,
previous_fk integer,
CONSTRAINT event_pkey PRIMARY KEY (id),
CONSTRAINT next_event_fk FOREIGN KEY (next_fk)
REFERENCES event (id) MATCH SIMPLE
ON UPDATE NO ACTION ON DELETE NO ACTION,
CONSTRAINT previous_event_fk FOREIGN KEY (previous_fk)
REFERENCES event (id) MATCH SIMPLE
ON UPDATE NO ACTION ON DELETE NO ACTION
)
From the date and time I want to create a timestamp.
I know that
- the events take place during the day, say between 10:30 and 22:30
- it's always a set of events at one location spaced about 30min apart
- the imported data are chained (have a link to previous/next event)
Have you got any idea how I could tackle this problem
--
Best Regards,
Tarlika Elisabeth Schmitz
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