On Wednesday 05 January 2011 4:24:34 pm Iuri Sampaio wrote: > Hi there, > > I installed postgresql 8.4 on my box and now i have troubles with the > following query regarding explicit casts. > > select to_char(trunc(to_date(:the_date, 'yyyy-mm-dd'), 'Month'), > 'fmMonth') as month, > to_char(trunc(to_date(:the_date, 'yyyy-mm-dd'), 'Month'), 'YYYY') > as year, > to_char(trunc(to_date(:the_date, 'yyyy-mm-dd'), 'Month'), 'J') as > first_julian_date_of_month, > to_char(last_day(to_date(:the_date, 'yyyy-mm-dd')), 'DD') as > num_days_in_month, > to_char(trunc(to_date(:the_date, 'yyyy-mm-dd'), 'Month'), 'D') as > first_day_of_month, > to_char(last_day(to_date(:the_date, 'yyyy-mm-dd')), 'DD') as last_day, > trunc(add_months(to_date(:the_date, 'yyyy-mm-dd'), 1),'Day') as > next_month, > trunc(add_months(to_date(:the_date, 'yyyy-mm-dd'), -1),'Day') as > prev_month, > trunc(to_date(:the_date, 'yyyy-mm-dd'), 'year') as beginning_of_year, > to_char(last_day(add_months(to_date(:the_date, 'yyyy-mm-dd'), -1)), > 'DD') as days_in_last_month, > to_char(add_months(to_date(:the_date, 'yyyy-mm-dd'), 1), 'fmMonth') > as next_month_name, > to_char(add_months(to_date(:the_date, 'yyyy-mm-dd'), -1), > 'fmMonth') as prev_month_name > from dual > > the value assigned to the variable :the_date is '2010-01-05' > > The error is > > Error: Ns_PgExec: result status: 7 message: ERROR: function > to_date(timestamp with time zone, unknown) does not exist > LINE 1: select to_date(date_trunc('month',add_months( $1 ,1)),'YYYY-... > ^ > HINT: No function matches the given name and argument types. You might > need to add explicit type casts. > QUERY: select to_date(date_trunc('month',add_months( $1 > ,1)),'YYYY-MM-DD') - 1 > CONTEXT: PL/pgSQL function "last_day" line 6 at SQL statement > > > how would i apply the following solution > > date_trunc('month', p_date_in + interval '1 month')::date - 1 > > to fix the query above? > > cheers, > iuri
If I am following this right the problem is in the last_day function and in particular the return value of the add_months function used in the date_trunc(). To be sure we would need to see those functions. As a shot in the dark: select to_date(date_trunc('month',add_months( $1 ,1)::date)... -- Adrian Klaver adrian.kla...@gmail.com -- Sent via pgsql-sql mailing list (pgsql-sql@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-sql