The correct function is:
CREATE function anyo_hidro (date) returns int AS '
BEGIN
RETURN date_part(''month'',$1);
END;
' LANGUAGE 'plpgsql';
By the way: Do you know what 'RTFM' means?
Salvador Mainé escribió:
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Hello:
I'm trying to define a function that, given a date, returns its month.
The definition is as follows:
CREATE function anyo_hidro (date) returns int AS '
BEGIN
RETURN date_part("month",$1);
END;
' LANGUAGE 'plpgsql';
But when I do:
select anyo_hidro('1-1-1999');
I g
Hello:
I have a table with pluviometrical data
meteo (rain float, day date)
I want to select the the day of maximum value for each year.It should be
something like :
select max(rain),day from meteo group by date_part('year', day);
but it obiously doesn't work.
I thought of doing it with agg
Hello:
I have a table with pluviometrical data
meteo (rain float, day date, oid station)
I want to select the the day of maximum value for each year for a given
measurement station. It should look like :
select max(rain),day from meteo group by date_part('year', day) where
station=7654765;
th
Hello:
I'm using postgres 7.0.2. When I use date_part('day', date) sometimes I
get wrong values. Ie:
and date_part('day', '1999-3-28')=27
and date_part('day', '2000-3-26')=25
Is it a bug? Is there any SQL equivalent function?
--
Salva
